/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:50:24,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:50:24,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:50:24,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:50:24,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:50:24,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:50:24,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:50:24,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:50:24,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:50:24,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:50:24,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:50:24,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 04:50:24,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:50:24,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:50:24,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:50:24,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:50:24,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:50:24,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:50:24,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:50:24,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:50:24,677 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:50:24,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:50:24,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:50:24,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:50:24,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:50:24,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:50:24,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:50:24,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:50:24,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:50:24,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:50:24,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:50:24,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:50:24,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:50:24,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:50:24,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:50:24,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:50:24,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:50:24,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:50:24,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:50:24,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:50:24,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:50:24,684 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:50:25,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:50:25,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:50:25,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:50:25,094 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:50:25,095 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:50:25,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2020-12-22 04:50:25,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8de1a3b1/8ae7aafe43f04e29846a72e0953e0a91/FLAG12b6e3e1f [2020-12-22 04:50:25,810 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:50:25,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2020-12-22 04:50:25,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8de1a3b1/8ae7aafe43f04e29846a72e0953e0a91/FLAG12b6e3e1f [2020-12-22 04:50:26,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8de1a3b1/8ae7aafe43f04e29846a72e0953e0a91 [2020-12-22 04:50:26,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:50:26,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:50:26,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:50:26,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:50:26,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:50:26,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:50:26" (1/1) ... [2020-12-22 04:50:26,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2506c893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26, skipping insertion in model container [2020-12-22 04:50:26,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:50:26" (1/1) ... [2020-12-22 04:50:26,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:50:26,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:50:26,363 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i[873,886] [2020-12-22 04:50:26,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:50:26,385 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:50:26,398 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i[873,886] [2020-12-22 04:50:26,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:50:26,417 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:50:26,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26 WrapperNode [2020-12-22 04:50:26,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:50:26,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:50:26,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:50:26,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:50:26,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26" (1/1) ... [2020-12-22 04:50:26,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26" (1/1) ... [2020-12-22 04:50:26,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:50:26,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:50:26,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:50:26,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:50:26,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26" (1/1) ... [2020-12-22 04:50:26,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26" (1/1) ... [2020-12-22 04:50:26,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26" (1/1) ... [2020-12-22 04:50:26,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26" (1/1) ... [2020-12-22 04:50:26,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26" (1/1) ... [2020-12-22 04:50:26,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26" (1/1) ... [2020-12-22 04:50:26,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26" (1/1) ... [2020-12-22 04:50:26,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:50:26,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:50:26,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:50:26,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:50:26,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26" (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 [2020-12-22 04:50:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:50:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:50:26,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:50:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:50:26,849 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:50:26,849 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 04:50:26,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:50:26 BoogieIcfgContainer [2020-12-22 04:50:26,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:50:26,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:50:26,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:50:26,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:50:26,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:50:26" (1/3) ... [2020-12-22 04:50:26,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b7729e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:50:26, skipping insertion in model container [2020-12-22 04:50:26,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:50:26" (2/3) ... [2020-12-22 04:50:26,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b7729e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:50:26, skipping insertion in model container [2020-12-22 04:50:26,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:50:26" (3/3) ... [2020-12-22 04:50:26,862 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark04_conjunctive.i [2020-12-22 04:50:26,871 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:50:26,877 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 04:50:26,974 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 04:50:27,003 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:50:27,003 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:50:27,003 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:50:27,003 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:50:27,004 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:50:27,004 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:50:27,004 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:50:27,004 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:50:27,019 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-22 04:50:27,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:50:27,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:27,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:27,038 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:27,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:27,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2020-12-22 04:50:27,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:27,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065986068] [2020-12-22 04:50:27,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:27,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065986068] [2020-12-22 04:50:27,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:50:27,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:50:27,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187485967] [2020-12-22 04:50:27,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:50:27,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:27,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:50:27,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:50:27,293 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2020-12-22 04:50:27,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:27,313 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-12-22 04:50:27,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:50:27,315 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 04:50:27,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:27,339 INFO L225 Difference]: With dead ends: 20 [2020-12-22 04:50:27,339 INFO L226 Difference]: Without dead ends: 8 [2020-12-22 04:50:27,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:50:27,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-22 04:50:27,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-22 04:50:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-22 04:50:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-22 04:50:27,379 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2020-12-22 04:50:27,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:27,379 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-22 04:50:27,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:50:27,380 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-22 04:50:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:50:27,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:27,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:27,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:50:27,383 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:27,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:27,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2020-12-22 04:50:27,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:27,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847953783] [2020-12-22 04:50:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:27,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847953783] [2020-12-22 04:50:27,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:50:27,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 04:50:27,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241926991] [2020-12-22 04:50:27,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 04:50:27,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:27,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 04:50:27,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:50:27,536 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2020-12-22 04:50:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:27,556 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-12-22 04:50:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 04:50:27,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-22 04:50:27,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:27,558 INFO L225 Difference]: With dead ends: 13 [2020-12-22 04:50:27,558 INFO L226 Difference]: Without dead ends: 9 [2020-12-22 04:50:27,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 04:50:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-22 04:50:27,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-22 04:50:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-22 04:50:27,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-22 04:50:27,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-12-22 04:50:27,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:27,563 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-22 04:50:27,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 04:50:27,564 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-22 04:50:27,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 04:50:27,564 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:27,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:27,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:50:27,565 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:27,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:27,566 INFO L82 PathProgramCache]: Analyzing trace with hash 183170323, now seen corresponding path program 1 times [2020-12-22 04:50:27,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:27,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884757340] [2020-12-22 04:50:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:27,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884757340] [2020-12-22 04:50:27,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551565678] [2020-12-22 04:50:27,627 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 [2020-12-22 04:50:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:27,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 04:50:27,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:50:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:27,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:50:27,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 04:50:27,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411122171] [2020-12-22 04:50:27,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:50:27,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:27,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:50:27,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:50:27,832 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2020-12-22 04:50:27,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:27,876 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-12-22 04:50:27,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:50:27,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-22 04:50:27,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:27,879 INFO L225 Difference]: With dead ends: 14 [2020-12-22 04:50:27,879 INFO L226 Difference]: Without dead ends: 10 [2020-12-22 04:50:27,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:50:27,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-22 04:50:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-22 04:50:27,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-22 04:50:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-12-22 04:50:27,892 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-12-22 04:50:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:27,893 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-12-22 04:50:27,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:50:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-12-22 04:50:27,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 04:50:27,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:50:27,894 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:50:28,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 04:50:28,109 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:50:28,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:50:28,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1384978123, now seen corresponding path program 2 times [2020-12-22 04:50:28,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:50:28,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995819393] [2020-12-22 04:50:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:50:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:50:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:28,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995819393] [2020-12-22 04:50:28,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348688969] [2020-12-22 04:50:28,241 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 [2020-12-22 04:50:28,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:50:28,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:50:28,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 04:50:28,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:50:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:50:28,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 04:50:28,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 04:50:28,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705681233] [2020-12-22 04:50:28,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:50:28,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:50:28,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:50:28,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:50:28,424 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2020-12-22 04:50:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:50:28,499 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-12-22 04:50:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:50:28,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-12-22 04:50:28,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:50:28,500 INFO L225 Difference]: With dead ends: 10 [2020-12-22 04:50:28,500 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 04:50:28,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-12-22 04:50:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 04:50:28,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 04:50:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 04:50:28,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 04:50:28,503 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-12-22 04:50:28,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:50:28,503 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 04:50:28,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:50:28,503 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 04:50:28,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 04:50:28,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:50:28,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 04:50:28,782 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 04:50:28,783 INFO L192 CegarLoopUtils]: At program point L29(lines 19 30) the Hoare annotation is: true [2020-12-22 04:50:28,783 INFO L189 CegarLoopUtils]: For program point L23(line 23) no Hoare annotation was computed. [2020-12-22 04:50:28,783 INFO L189 CegarLoopUtils]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-22 04:50:28,783 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 04:50:28,784 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 04:50:28,784 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 04:50:28,784 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-12-22 04:50:28,784 INFO L185 CegarLoopUtils]: At program point L24-2(lines 24 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (<= 0 ULTIMATE.start_main_~k~0)) [2020-12-22 04:50:28,784 INFO L189 CegarLoopUtils]: For program point L24-3(lines 24 27) no Hoare annotation was computed. [2020-12-22 04:50:28,784 INFO L189 CegarLoopUtils]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-22 04:50:28,785 INFO L189 CegarLoopUtils]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-12-22 04:50:28,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:50:28 BoogieIcfgContainer [2020-12-22 04:50:28,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:50:28,819 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:50:28,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:50:28,819 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:50:28,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:50:26" (3/4) ... [2020-12-22 04:50:28,824 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 04:50:28,836 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-22 04:50:28,837 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 04:50:28,837 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:50:28,837 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:50:28,882 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loop-zilu/benchmark04_conjunctive.i-witness.graphml [2020-12-22 04:50:28,882 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:50:28,884 INFO L168 Benchmark]: Toolchain (without parser) took 2706.66 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 59.6 MB in the end (delta: 66.9 MB). Peak memory consumption was 66.9 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:28,885 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:50:28,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.29 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:28,886 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.21 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:28,887 INFO L168 Benchmark]: Boogie Preprocessor took 22.59 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 114.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:28,888 INFO L168 Benchmark]: RCFGBuilder took 371.75 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 103.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:28,889 INFO L168 Benchmark]: TraceAbstraction took 1965.06 ms. Allocated memory is still 151.0 MB. Free memory was 102.9 MB in the beginning and 62.2 MB in the end (delta: 40.8 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:28,889 INFO L168 Benchmark]: Witness Printer took 62.80 ms. Allocated memory is still 151.0 MB. Free memory was 61.6 MB in the beginning and 59.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:50:28,894 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 240.29 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.21 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.59 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 114.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 371.75 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 103.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1965.06 ms. Allocated memory is still 151.0 MB. Free memory was 102.9 MB in the beginning and 62.2 MB in the end (delta: 40.8 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. * Witness Printer took 62.80 ms. Allocated memory is still 151.0 MB. Free memory was 61.6 MB in the beginning and 59.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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: 24]: Loop Invariant Derived loop invariant: n <= k + j && 0 <= k - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 4 SDslu, 26 SDs, 0 SdLazy, 36 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 749 SizeOfPredicates, 7 NumberOfNonLiveVariables, 113 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 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...