/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:01:31,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:01:32,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:01:32,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 22:01:32,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:01:32,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:01:32,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:01:32,128 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:01:32,151 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:01:32,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:01:32,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:01:32,157 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:01:32,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:01:32,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:01:32,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:01:32,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:01:32,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:01:32,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:01:32,160 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:01:32,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:01:32,161 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:01:32,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:01:32,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:01:32,162 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:01:32,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:01:32,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:01:32,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:01:32,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:01:32,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:01:32,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:01:32,163 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:01:32,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:01:32,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:01:32,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:01:32,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:01:32,620 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:01:32,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2020-10-23 22:01:32,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/402d80602/22526ff9638d4f3faee3252a666d619a/FLAGa43b863ab [2020-10-23 22:01:33,310 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:01:33,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2020-10-23 22:01:33,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/402d80602/22526ff9638d4f3faee3252a666d619a/FLAGa43b863ab [2020-10-23 22:01:33,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/402d80602/22526ff9638d4f3faee3252a666d619a [2020-10-23 22:01:33,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:01:33,683 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:01:33,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:33,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:01:33,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:01:33,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:33" (1/1) ... [2020-10-23 22:01:33,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6761d0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:33, skipping insertion in model container [2020-10-23 22:01:33,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:01:33" (1/1) ... [2020-10-23 22:01:33,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:01:33,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:01:33,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:33,920 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:01:33,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:01:33,959 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:01:33,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:33 WrapperNode [2020-10-23 22:01:33,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:01:33,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:01:33,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:01:33,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:01:33,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:33" (1/1) ... [2020-10-23 22:01:33,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:33" (1/1) ... [2020-10-23 22:01:33,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:33" (1/1) ... [2020-10-23 22:01:33,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:33" (1/1) ... [2020-10-23 22:01:33,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:33" (1/1) ... [2020-10-23 22:01:33,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:33" (1/1) ... [2020-10-23 22:01:34,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:33" (1/1) ... [2020-10-23 22:01:34,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:01:34,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:01:34,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:01:34,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:01:34,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:33" (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 [2020-10-23 22:01:34,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:01:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:01:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:01:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 22:01:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 22:01:34,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:01:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:01:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:01:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 22:01:34,093 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 22:01:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:01:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:01:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 22:01:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 22:01:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:01:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:01:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:01:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:01:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:01:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:01:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:01:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:01:34,520 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:01:34,520 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 22:01:34,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:34 BoogieIcfgContainer [2020-10-23 22:01:34,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:01:34,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:01:34,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:01:34,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:01:34,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:01:33" (1/3) ... [2020-10-23 22:01:34,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4269d444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:34, skipping insertion in model container [2020-10-23 22:01:34,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:01:33" (2/3) ... [2020-10-23 22:01:34,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4269d444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:01:34, skipping insertion in model container [2020-10-23 22:01:34,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:01:34" (3/3) ... [2020-10-23 22:01:34,532 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.i [2020-10-23 22:01:34,545 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:01:34,550 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:01:34,564 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:01:34,591 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:01:34,591 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:01:34,591 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:01:34,592 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:01:34,592 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:01:34,592 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:01:34,592 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:01:34,592 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:01:34,609 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-23 22:01:34,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-23 22:01:34,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:34,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:01:34,622 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:34,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:34,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1351678347, now seen corresponding path program 1 times [2020-10-23 22:01:34,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:34,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505870758] [2020-10-23 22:01:34,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:34,717 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:34,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:01:34,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505870758] [2020-10-23 22:01:34,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:34,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 22:01:34,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700418092] [2020-10-23 22:01:34,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 22:01:34,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:34,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 22:01:34,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 22:01:34,934 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-10-23 22:01:35,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:35,026 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-10-23 22:01:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 22:01:35,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-23 22:01:35,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:35,037 INFO L225 Difference]: With dead ends: 64 [2020-10-23 22:01:35,037 INFO L226 Difference]: Without dead ends: 37 [2020-10-23 22:01:35,041 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 [2020-10-23 22:01:35,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-23 22:01:35,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-23 22:01:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-23 22:01:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-10-23 22:01:35,096 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2020-10-23 22:01:35,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:35,097 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-10-23 22:01:35,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 22:01:35,098 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-10-23 22:01:35,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-23 22:01:35,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:35,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:01:35,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:01:35,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:35,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:35,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1103444181, now seen corresponding path program 1 times [2020-10-23 22:01:35,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:35,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742832614] [2020-10-23 22:01:35,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:35,105 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:01:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:01:35,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742832614] [2020-10-23 22:01:35,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:35,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 22:01:35,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595297554] [2020-10-23 22:01:35,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 22:01:35,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:35,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 22:01:35,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-23 22:01:35,370 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2020-10-23 22:01:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:35,884 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-10-23 22:01:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 22:01:35,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-23 22:01:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:35,886 INFO L225 Difference]: With dead ends: 48 [2020-10-23 22:01:35,886 INFO L226 Difference]: Without dead ends: 40 [2020-10-23 22:01:35,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-23 22:01:35,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-23 22:01:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-23 22:01:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-23 22:01:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-10-23 22:01:35,904 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 30 [2020-10-23 22:01:35,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:35,904 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-10-23 22:01:35,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 22:01:35,905 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-10-23 22:01:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-23 22:01:35,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:01:35,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 22:01:35,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:01:35,907 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:01:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:01:35,907 INFO L82 PathProgramCache]: Analyzing trace with hash 673644348, now seen corresponding path program 1 times [2020-10-23 22:01:35,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:01:35,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558306545] [2020-10-23 22:01:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:01:38,507 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:01:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:38,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:01:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:01:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:01:39,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558306545] [2020-10-23 22:01:39,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:01:39,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 22:01:39,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345507583] [2020-10-23 22:01:39,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 22:01:39,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:01:39,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 22:01:39,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-23 22:01:39,095 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 16 states. [2020-10-23 22:01:39,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:01:39,960 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-10-23 22:01:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 22:01:39,961 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-23 22:01:39,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:01:39,962 INFO L225 Difference]: With dead ends: 40 [2020-10-23 22:01:39,962 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 22:01:39,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2020-10-23 22:01:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 22:01:39,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 22:01:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 22:01:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 22:01:39,968 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-10-23 22:01:39,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:01:39,968 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 22:01:39,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 22:01:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 22:01:39,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 22:01:39,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:01:39,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 22:01:40,253 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2020-10-23 22:01:40,690 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-10-23 22:01:40,944 INFO L270 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: (= __VERIFIER_assert_~cond 0) [2020-10-23 22:01:40,944 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 22:01:40,944 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 22:01:40,944 INFO L270 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: (= __VERIFIER_assert_~cond 0) [2020-10-23 22:01:40,944 INFO L270 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: (= __VERIFIER_assert_~cond 0) [2020-10-23 22:01:40,944 INFO L270 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: (= __VERIFIER_assert_~cond 0) [2020-10-23 22:01:40,945 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:01:40,945 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 22:01:40,945 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-23 22:01:40,945 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-23 22:01:40,945 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-23 22:01:40,945 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-23 22:01:40,946 INFO L270 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)|)) [2020-10-23 22:01:40,946 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-23 22:01:40,946 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:01:40,946 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 22:01:40,946 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 22:01:40,946 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 22:01:40,947 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 22:01:40,947 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-23 22:01:40,947 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-23 22:01:40,947 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:01:40,947 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:01:40,947 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-23 22:01:40,947 INFO L270 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (and (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0)) [2020-10-23 22:01:40,948 INFO L270 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: (and (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0) (= |main_#t~post6| main_~y~0)) [2020-10-23 22:01:40,948 INFO L270 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: (and (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0) (= |main_#t~post6| (+ main_~y~0 1))) [2020-10-23 22:01:40,948 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (<= 0 main_~i~0) [2020-10-23 22:01:40,948 INFO L270 CegarLoopResult]: At program point L31-2(lines 31 34) the Hoare annotation is: (and (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0)) [2020-10-23 22:01:40,948 INFO L270 CegarLoopResult]: At program point L31-3(lines 24 39) the Hoare annotation is: (or (and (<= 0 main_~i~0) (= main_~x~0 0)) (let ((.cse2 (< 0 (+ main_~y~0 1))) (.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0)) (.cse3 (<= main_~y~0 0))) (and (or (<= .cse0 .cse1) .cse2) (or (<= .cse1 main_~j~0) .cse3) (or (<= main_~j~0 .cse1) .cse2) (or (<= .cse1 .cse0) .cse3) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)))) [2020-10-23 22:01:40,949 INFO L277 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-10-23 22:01:40,949 INFO L277 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-10-23 22:01:40,949 INFO L277 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-10-23 22:01:40,949 INFO L277 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: true [2020-10-23 22:01:40,949 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 24 39) the Hoare annotation is: true [2020-10-23 22:01:40,950 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 24 39) the Hoare annotation is: true [2020-10-23 22:01:40,950 INFO L270 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (<= main_~y~0 0)) (.cse1 (< 0 (+ main_~y~0 1)))) (or (and (or (<= (+ main_~i~0 main_~y~0) main_~j~0) .cse0) (<= 0 main_~i~0) (or (<= main_~j~0 (+ main_~y~0 main_~i~0)) .cse1) (= main_~x~0 0)) (and .cse0 (<= main_~i~0 main_~x~0) .cse1 (<= main_~x~0 main_~i~0)))) [2020-10-23 22:01:40,950 INFO L270 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (and (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0) (not (= main_~x~0 0))) [2020-10-23 22:01:40,950 INFO L270 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: (and (= |main_#t~post5| main_~x~0) (not (= (+ main_~x~0 1) 0)) (<= 0 main_~i~0) (not (= main_~x~0 0))) [2020-10-23 22:01:40,950 INFO L270 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= 0 main_~i~0) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) [2020-10-23 22:01:40,951 INFO L270 CegarLoopResult]: At program point L32-2(line 32) the Hoare annotation is: (and (= |main_#t~post5| (+ main_~x~0 1)) (<= 0 main_~i~0) (not (= |main_#t~post5| 0))) [2020-10-23 22:01:40,951 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 39) the Hoare annotation is: true [2020-10-23 22:01:40,951 INFO L277 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-10-23 22:01:40,951 INFO L277 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-10-23 22:01:40,951 INFO L277 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-10-23 22:01:40,951 INFO L277 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-10-23 22:01:40,952 INFO L277 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: true [2020-10-23 22:01:40,952 INFO L277 CegarLoopResult]: At program point L35(lines 35 37) the Hoare annotation is: true [2020-10-23 22:01:40,952 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-10-23 22:01:40,952 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-23 22:01:40,952 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2020-10-23 22:01:40,952 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= |__VERIFIER_assert_#in~cond| 0) (or (and (not (<= main_~j~0 (+ main_~y~0 main_~i~0))) (not (< 0 (+ main_~y~0 1)))) (and (not (<= main_~y~0 0)) (not (<= (+ main_~i~0 main_~y~0) main_~j~0))))) [2020-10-23 22:01:40,953 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (and (let ((.cse1 (<= main_~y~0 0)) (.cse0 (< 0 (+ main_~y~0 1)))) (or (and (not (<= main_~j~0 (+ main_~y~0 main_~i~0))) (not .cse0)) (and (not .cse1) (not (<= (+ main_~i~0 main_~y~0) main_~j~0))) (and .cse1 .cse0))) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2020-10-23 22:01:40,953 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (and (= |__VERIFIER_assert_#in~cond| 0) (or (and (not (<= main_~j~0 (+ main_~y~0 main_~i~0))) (not (< 0 (+ main_~y~0 1)))) (and (not (<= main_~y~0 0)) (not (<= (+ main_~i~0 main_~y~0) main_~j~0))))) [2020-10-23 22:01:40,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:01:40 BoogieIcfgContainer [2020-10-23 22:01:40,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 22:01:40,974 INFO L168 Benchmark]: Toolchain (without parser) took 7295.37 ms. Allocated memory was 155.2 MB in the beginning and 192.9 MB in the end (delta: 37.7 MB). Free memory was 132.6 MB in the beginning and 98.1 MB in the end (delta: 34.5 MB). Peak memory consumption was 105.3 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:40,975 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 155.2 MB. Free memory was 131.6 MB in the beginning and 131.5 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:01:40,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.11 ms. Allocated memory is still 155.2 MB. Free memory was 132.1 MB in the beginning and 122.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:40,977 INFO L168 Benchmark]: Boogie Preprocessor took 41.65 ms. Allocated memory is still 155.2 MB. Free memory was 122.7 MB in the beginning and 121.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:40,978 INFO L168 Benchmark]: RCFGBuilder took 519.26 ms. Allocated memory is still 155.2 MB. Free memory was 121.2 MB in the beginning and 137.5 MB in the end (delta: -16.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:40,979 INFO L168 Benchmark]: TraceAbstraction took 6448.15 ms. Allocated memory was 155.2 MB in the beginning and 192.9 MB in the end (delta: 37.7 MB). Free memory was 137.0 MB in the beginning and 98.1 MB in the end (delta: 38.9 MB). Peak memory consumption was 109.2 MB. Max. memory is 8.0 GB. [2020-10-23 22:01:40,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 155.2 MB. Free memory was 131.6 MB in the beginning and 131.5 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.11 ms. Allocated memory is still 155.2 MB. Free memory was 132.1 MB in the beginning and 122.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.65 ms. Allocated memory is still 155.2 MB. Free memory was 122.7 MB in the beginning and 121.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 519.26 ms. Allocated memory is still 155.2 MB. Free memory was 121.2 MB in the beginning and 137.5 MB in the end (delta: -16.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6448.15 ms. Allocated memory was 155.2 MB in the beginning and 192.9 MB in the end (delta: 37.7 MB). Free memory was 137.0 MB in the beginning and 98.1 MB in the end (delta: 38.9 MB). Peak memory consumption was 109.2 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: 31]: Loop Invariant Derived loop invariant: !(x + 1 == 0) && 0 <= i - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: cond == 0 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 107 SDtfs, 117 SDslu, 176 SDs, 0 SdLazy, 334 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 49 LocationsWithAnnotation, 73 PreInvPairs, 89 NumberOfFragments, 375 HoareAnnotationTreeSize, 73 FomulaSimplifications, 324 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 49 FomulaSimplificationsInter, 1180 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...