/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/afnp2014.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:46:14,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:46:14,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:46:14,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:46:14,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:46:14,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:46:14,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:46:14,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:46:14,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:46:14,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:46:14,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:46:14,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-11-06 22:46:14,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:46:14,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:46:14,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:46:14,246 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:46:14,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:46:14,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:46:14,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:46:14,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:46:14,296 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:46:14,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:46:14,296 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:46:14,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:46:14,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:46:14,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:46:14,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:46:14,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:46:14,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:46:14,299 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:46:14,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:46:14,299 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:46:14,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:46:14,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:46:14,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:46:14,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:46:14,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:46:14,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:46:14,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:46:14,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:46:14,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:46:14,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:46:14,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:46:14,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:46:14,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:46:14,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:46:14,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:46:14,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:46:14,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:46:14,771 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:46:14,774 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:46:14,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014.i [2020-11-06 22:46:14,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4122752da/6f853309ddb14eb3babf21edbeb3764e/FLAG5e09e41d4 [2020-11-06 22:46:15,475 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:46:15,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014.i [2020-11-06 22:46:15,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4122752da/6f853309ddb14eb3babf21edbeb3764e/FLAG5e09e41d4 [2020-11-06 22:46:15,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4122752da/6f853309ddb14eb3babf21edbeb3764e [2020-11-06 22:46:15,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:46:15,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:46:15,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:15,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:46:15,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:46:15,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:15" (1/1) ... [2020-11-06 22:46:15,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb190de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:15, skipping insertion in model container [2020-11-06 22:46:15,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:15" (1/1) ... [2020-11-06 22:46:15,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:46:15,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:46:16,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:16,068 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:46:16,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:16,098 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:46:16,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:16 WrapperNode [2020-11-06 22:46:16,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:16,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:46:16,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:46:16,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:46:16,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:16" (1/1) ... [2020-11-06 22:46:16,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:16" (1/1) ... [2020-11-06 22:46:16,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:16" (1/1) ... [2020-11-06 22:46:16,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:16" (1/1) ... [2020-11-06 22:46:16,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:16" (1/1) ... [2020-11-06 22:46:16,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:16" (1/1) ... [2020-11-06 22:46:16,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:16" (1/1) ... [2020-11-06 22:46:16,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:46:16,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:46:16,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:46:16,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:46:16,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:16" (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 [2020-11-06 22:46:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:46:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:46:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:46:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:46:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:46:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:46:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:46:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:46:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:46:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:46:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:46:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:46:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:46:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:46:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:46:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:46:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:46:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:46:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:46:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:46:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:46:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:46:16,710 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:46:16,711 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:46:16,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:16 BoogieIcfgContainer [2020-11-06 22:46:16,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:46:16,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:46:16,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:46:16,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:46:16,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:15" (1/3) ... [2020-11-06 22:46:16,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418ef030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:16, skipping insertion in model container [2020-11-06 22:46:16,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:16" (2/3) ... [2020-11-06 22:46:16,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418ef030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:16, skipping insertion in model container [2020-11-06 22:46:16,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:16" (3/3) ... [2020-11-06 22:46:16,722 INFO L111 eAbstractionObserver]: Analyzing ICFG afnp2014.i [2020-11-06 22:46:16,738 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:46:16,741 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:46:16,753 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:46:16,779 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:46:16,779 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:46:16,779 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:46:16,779 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:46:16,780 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:46:16,780 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:46:16,780 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:46:16,780 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:46:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-06 22:46:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:46:16,803 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:16,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:16,804 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:16,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:16,810 INFO L82 PathProgramCache]: Analyzing trace with hash -2005588687, now seen corresponding path program 1 times [2020-11-06 22:46:16,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:16,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108297410] [2020-11-06 22:46:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:17,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:17,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108297410] [2020-11-06 22:46:17,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:17,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:46:17,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727668453] [2020-11-06 22:46:17,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:46:17,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:17,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:46:17,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:46:17,054 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-11-06 22:46:17,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:17,115 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-11-06 22:46:17,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:46:17,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-06 22:46:17,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:17,125 INFO L225 Difference]: With dead ends: 40 [2020-11-06 22:46:17,125 INFO L226 Difference]: Without dead ends: 16 [2020-11-06 22:46:17,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:46:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-06 22:46:17,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-06 22:46:17,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-06 22:46:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-06 22:46:17,168 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-11-06 22:46:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:17,169 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-06 22:46:17,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:46:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-06 22:46:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-06 22:46:17,170 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:17,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:17,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:46:17,171 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:17,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1278695818, now seen corresponding path program 1 times [2020-11-06 22:46:17,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:17,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774373748] [2020-11-06 22:46:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:17,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:17,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774373748] [2020-11-06 22:46:17,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:17,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-06 22:46:17,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604692970] [2020-11-06 22:46:17,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-06 22:46:17,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:17,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-06 22:46:17,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:46:17,334 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2020-11-06 22:46:17,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:17,536 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-11-06 22:46:17,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-06 22:46:17,537 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-06 22:46:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:17,538 INFO L225 Difference]: With dead ends: 26 [2020-11-06 22:46:17,538 INFO L226 Difference]: Without dead ends: 19 [2020-11-06 22:46:17,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:46:17,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-06 22:46:17,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-06 22:46:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-06 22:46:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-06 22:46:17,548 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-11-06 22:46:17,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:17,549 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-06 22:46:17,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-06 22:46:17,549 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-06 22:46:17,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-06 22:46:17,550 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:17,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:17,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:46:17,550 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:17,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:17,551 INFO L82 PathProgramCache]: Analyzing trace with hash -338650440, now seen corresponding path program 1 times [2020-11-06 22:46:17,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:17,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831767331] [2020-11-06 22:46:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:17,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:17,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831767331] [2020-11-06 22:46:17,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305127328] [2020-11-06 22:46:17,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:17,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-06 22:46:17,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:17,799 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:46:17,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:17,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:17,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-11-06 22:46:17,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053776184] [2020-11-06 22:46:17,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:46:17,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:17,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:46:17,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:46:17,836 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 10 states. [2020-11-06 22:46:18,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:18,037 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-06 22:46:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:46:18,037 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-11-06 22:46:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:18,038 INFO L225 Difference]: With dead ends: 29 [2020-11-06 22:46:18,039 INFO L226 Difference]: Without dead ends: 22 [2020-11-06 22:46:18,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:46:18,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-06 22:46:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-06 22:46:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-06 22:46:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-06 22:46:18,046 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 18 [2020-11-06 22:46:18,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:18,046 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-06 22:46:18,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:46:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-06 22:46:18,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-06 22:46:18,047 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:18,048 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:18,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:46:18,261 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:18,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:18,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1757895990, now seen corresponding path program 2 times [2020-11-06 22:46:18,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:18,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167683608] [2020-11-06 22:46:18,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:18,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:18,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167683608] [2020-11-06 22:46:18,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385182347] [2020-11-06 22:46:18,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:18,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-06 22:46:18,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-06 22:46:18,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-06 22:46:18,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:46:18,455 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-06 22:46:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:18,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:46:18,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-11-06 22:46:18,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225484372] [2020-11-06 22:46:18,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-06 22:46:18,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:18,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-06 22:46:18,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-11-06 22:46:18,488 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 11 states. [2020-11-06 22:46:18,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:18,629 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-06 22:46:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:46:18,629 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-11-06 22:46:18,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:18,630 INFO L225 Difference]: With dead ends: 22 [2020-11-06 22:46:18,630 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:46:18,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-11-06 22:46:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:46:18,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:46:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:46:18,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:46:18,631 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-11-06 22:46:18,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:18,632 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:46:18,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-06 22:46:18,632 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:46:18,632 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:46:18,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:46:18,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:46:18,983 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-11-06 22:46:18,983 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-06 22:46:18,983 INFO L266 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-11-06 22:46:18,983 INFO L266 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-06 22:46:18,983 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-06 22:46:18,984 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:18,984 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-06 22:46:18,984 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:18,984 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:18,984 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:46:18,984 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:46:18,985 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:18,985 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-06 22:46:18,985 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:18,985 INFO L266 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:18,985 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:18,985 INFO L266 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-11-06 22:46:18,985 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 33) the Hoare annotation is: true [2020-11-06 22:46:18,985 INFO L266 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-11-06 22:46:18,986 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 24 33) no Hoare annotation was computed. [2020-11-06 22:46:18,986 INFO L266 CegarLoopResult]: For program point L27-3(lines 27 30) no Hoare annotation was computed. [2020-11-06 22:46:18,986 INFO L262 CegarLoopResult]: At program point L27-5(lines 27 30) the Hoare annotation is: (and (<= 1 main_~x~0) (<= 0 main_~y~0) (<= main_~y~0 main_~x~0)) [2020-11-06 22:46:18,986 INFO L262 CegarLoopResult]: At program point L27-6(lines 27 30) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2020-11-06 22:46:18,986 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 24 33) no Hoare annotation was computed. [2020-11-06 22:46:18,986 INFO L266 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:46:18,987 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-06 22:46:18,987 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:46:18,987 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-06 22:46:18,987 INFO L266 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-06 22:46:18,987 INFO L266 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-06 22:46:19,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:46:19 BoogieIcfgContainer [2020-11-06 22:46:19,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:46:19,005 INFO L168 Benchmark]: Toolchain (without parser) took 3168.92 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 120.1 MB in the beginning and 98.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 55.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:19,006 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 162.5 MB. Free memory is still 136.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:46:19,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.83 ms. Allocated memory is still 162.5 MB. Free memory was 119.4 MB in the beginning and 138.4 MB in the end (delta: -19.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:19,008 INFO L168 Benchmark]: Boogie Preprocessor took 69.94 ms. Allocated memory is still 162.5 MB. Free memory was 138.4 MB in the beginning and 145.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:19,009 INFO L168 Benchmark]: RCFGBuilder took 537.05 ms. Allocated memory is still 162.5 MB. Free memory was 145.4 MB in the beginning and 131.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:19,010 INFO L168 Benchmark]: TraceAbstraction took 2288.37 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 130.9 MB in the beginning and 98.6 MB in the end (delta: 32.3 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:19,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 162.5 MB. Free memory is still 136.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 257.83 ms. Allocated memory is still 162.5 MB. Free memory was 119.4 MB in the beginning and 138.4 MB in the end (delta: -19.1 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.94 ms. Allocated memory is still 162.5 MB. Free memory was 138.4 MB in the beginning and 145.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 3.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 537.05 ms. Allocated memory is still 162.5 MB. Free memory was 145.4 MB in the beginning and 131.3 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2288.37 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 130.9 MB in the beginning and 98.6 MB in the end (delta: 32.3 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (1 <= x && 0 <= y) && y <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 74 SDslu, 79 SDs, 0 SdLazy, 141 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 18 PreInvPairs, 21 NumberOfFragments, 46 HoareAnnotationTreeSize, 18 FomulaSimplifications, 35 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 179 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 5552 SizeOfPredicates, 4 NumberOfNonLiveVariables, 194 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...