/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 12:19:40,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 12:19:40,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 12:19:40,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 12:19:40,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 12:19:40,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 12:19:40,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 12:19:40,535 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-06 12:19:40,546 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 12:19:40,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 12:19:40,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 12:19:40,549 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 12:19:40,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 12:19:40,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 12:19:40,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 12:19:40,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 12:19:40,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 12:19:40,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 12:19:40,550 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 12:19:40,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 12:19:40,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 12:19:40,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 12:19:40,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 12:19:40,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 12:19:40,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 12:19:40,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 12:19:40,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 12:19:40,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 12:19:40,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 12:19:40,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 12:19:40,551 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 12:19:40,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 12:19:40,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 12:19:40,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 12:19:40,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 12:19:40,810 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 12:19:40,811 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 12:19:40,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i [2021-05-06 12:19:40,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cee96fc46/42091e663d5a456b8a72f69e62d0c512/FLAG61b86c6d3 [2021-05-06 12:19:41,206 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 12:19:41,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i [2021-05-06 12:19:41,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cee96fc46/42091e663d5a456b8a72f69e62d0c512/FLAG61b86c6d3 [2021-05-06 12:19:41,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cee96fc46/42091e663d5a456b8a72f69e62d0c512 [2021-05-06 12:19:41,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 12:19:41,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 12:19:41,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 12:19:41,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 12:19:41,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 12:19:41,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:19:41" (1/1) ... [2021-05-06 12:19:41,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@548bb5fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:41, skipping insertion in model container [2021-05-06 12:19:41,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 12:19:41" (1/1) ... [2021-05-06 12:19:41,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 12:19:41,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 12:19:41,343 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-05-06 12:19:41,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 12:19:41,356 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 12:19:41,364 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark23_conjunctive.i[873,886] [2021-05-06 12:19:41,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 12:19:41,382 INFO L208 MainTranslator]: Completed translation [2021-05-06 12:19:41,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:41 WrapperNode [2021-05-06 12:19:41,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 12:19:41,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 12:19:41,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 12:19:41,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 12:19:41,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:41" (1/1) ... [2021-05-06 12:19:41,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:41" (1/1) ... [2021-05-06 12:19:41,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:41" (1/1) ... [2021-05-06 12:19:41,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:41" (1/1) ... [2021-05-06 12:19:41,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:41" (1/1) ... [2021-05-06 12:19:41,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:41" (1/1) ... [2021-05-06 12:19:41,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:41" (1/1) ... [2021-05-06 12:19:41,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 12:19:41,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 12:19:41,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 12:19:41,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 12:19:41,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 12:19:41,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 12:19:41,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 12:19:41,500 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 12:19:41,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 12:19:41,500 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 12:19:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 12:19:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 12:19:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 12:19:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 12:19:41,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 12:19:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 12:19:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-06 12:19:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 12:19:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 12:19:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 12:19:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 12:19:41,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 12:19:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 12:19:41,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 12:19:41,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 12:19:41,692 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 12:19:41,692 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 12:19:41,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:19:41 BoogieIcfgContainer [2021-05-06 12:19:41,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 12:19:41,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 12:19:41,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 12:19:41,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 12:19:41,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 12:19:41" (1/3) ... [2021-05-06 12:19:41,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ad5329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:19:41, skipping insertion in model container [2021-05-06 12:19:41,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 12:19:41" (2/3) ... [2021-05-06 12:19:41,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ad5329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 12:19:41, skipping insertion in model container [2021-05-06 12:19:41,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 12:19:41" (3/3) ... [2021-05-06 12:19:41,697 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark23_conjunctive.i [2021-05-06 12:19:41,712 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 12:19:41,715 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 12:19:41,742 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 12:19:41,754 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 12:19:41,754 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 12:19:41,754 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 12:19:41,754 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 12:19:41,754 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 12:19:41,755 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 12:19:41,755 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 12:19:41,755 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 12:19:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 12:19:41,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 12:19:41,774 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 12:19:41,774 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 12:19:41,775 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 12:19:41,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 12:19:41,777 INFO L82 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2021-05-06 12:19:41,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 12:19:41,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850365410] [2021-05-06 12:19:41,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 12:19:41,831 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 12:19:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:19:41,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 12:19:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:19:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 12:19:41,921 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 12:19:41,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850365410] [2021-05-06 12:19:41,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1850365410] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 12:19:41,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 12:19:41,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 12:19:41,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563564733] [2021-05-06 12:19:41,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 12:19:41,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 12:19:41,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 12:19:41,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 12:19:41,934 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 12:19:41,998 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-05-06 12:19:41,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 12:19:41,999 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 12:19:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 12:19:42,002 INFO L225 Difference]: With dead ends: 33 [2021-05-06 12:19:42,002 INFO L226 Difference]: Without dead ends: 14 [2021-05-06 12:19:42,004 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 12:19:42,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-05-06 12:19:42,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-05-06 12:19:42,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-06 12:19:42,024 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-05-06 12:19:42,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 12:19:42,024 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-06 12:19:42,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-06 12:19:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 12:19:42,025 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 12:19:42,025 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 12:19:42,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 12:19:42,025 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 12:19:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 12:19:42,026 INFO L82 PathProgramCache]: Analyzing trace with hash -828987386, now seen corresponding path program 1 times [2021-05-06 12:19:42,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 12:19:42,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316922986] [2021-05-06 12:19:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 12:19:42,059 WARN L240 tifierPushTermWalker]: treesize reduction 3, result has 94.5 percent of original size [2021-05-06 12:19:42,063 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 12:19:42,074 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-06 12:19:42,096 WARN L245 tifierPushTermWalker]: treesize reduction 3, result has 94.5 percent of original size 52 [2021-05-06 12:19:42,110 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 12:19:42,112 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 12:19:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:19:42,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 12:19:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 12:19:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 12:19:42,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 12:19:42,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 12:19:42,287 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 12:19:42,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316922986] [2021-05-06 12:19:42,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [316922986] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 12:19:42,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 12:19:42,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-06 12:19:42,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346038912] [2021-05-06 12:19:42,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 12:19:42,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 12:19:42,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 12:19:42,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-05-06 12:19:42,289 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 12:19:42,412 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-05-06 12:19:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 12:19:42,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-06 12:19:42,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 12:19:42,413 INFO L225 Difference]: With dead ends: 14 [2021-05-06 12:19:42,413 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 12:19:42,414 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 186.8ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-05-06 12:19:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 12:19:42,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 12:19:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 12:19:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 12:19:42,414 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-05-06 12:19:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 12:19:42,414 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 12:19:42,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 12:19:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 12:19:42,415 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 12:19:42,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 12:19:42,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 12:19:42,534 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2021-05-06 12:19:42,534 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2021-05-06 12:19:42,534 INFO L198 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-05-06 12:19:42,535 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 12:19:42,535 INFO L194 CegarLoopUtils]: 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)|)) [2021-05-06 12:19:42,535 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 12:19:42,535 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 12:19:42,535 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 12:19:42,535 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 12:19:42,535 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 12:19:42,535 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 19 29) the Hoare annotation is: true [2021-05-06 12:19:42,535 INFO L201 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-05-06 12:19:42,535 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 19 29) the Hoare annotation is: true [2021-05-06 12:19:42,536 INFO L201 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: true [2021-05-06 12:19:42,536 INFO L194 CegarLoopUtils]: At program point L23-2(lines 23 26) the Hoare annotation is: (exists ((v_main_~i~0_9 Int) (|v_main_#t~post5_5| Int) (v_main_~j~0_10 Int)) (let ((.cse0 (* 2 v_main_~i~0_9))) (and (or (and (< v_main_~i~0_9 main_~i~0) (< main_~i~0 101) (= (+ main_~j~0 (* v_main_~i~0_9 2)) (+ (* main_~i~0 2) v_main_~j~0_10))) (and (= v_main_~i~0_9 main_~i~0) (= v_main_~j~0_10 main_~j~0) (= |main_#t~post5| |v_main_#t~post5_5|))) (<= .cse0 v_main_~j~0_10) (<= v_main_~j~0_10 .cse0) (<= v_main_~i~0_9 0)))) [2021-05-06 12:19:42,536 INFO L194 CegarLoopUtils]: At program point L23-3(lines 23 26) the Hoare annotation is: (and (< 199 main_~j~0) (exists ((v_main_~i~0_9 Int) (|v_main_#t~post5_5| Int) (v_main_~j~0_10 Int)) (let ((.cse0 (* 2 v_main_~i~0_9))) (and (or (and (< v_main_~i~0_9 main_~i~0) (< main_~i~0 101) (= (+ main_~j~0 (* v_main_~i~0_9 2)) (+ (* main_~i~0 2) v_main_~j~0_10))) (and (= v_main_~i~0_9 main_~i~0) (= v_main_~j~0_10 main_~j~0) (= |main_#t~post5| |v_main_#t~post5_5|))) (<= .cse0 v_main_~j~0_10) (<= v_main_~j~0_10 .cse0) (<= v_main_~i~0_9 0))))) [2021-05-06 12:19:42,536 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 19 29) the Hoare annotation is: true [2021-05-06 12:19:42,536 INFO L194 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 12:19:42,536 INFO L194 CegarLoopUtils]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-05-06 12:19:42,536 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2021-05-06 12:19:42,536 INFO L201 CegarLoopUtils]: At program point L15-2(lines 14 18) the Hoare annotation is: true [2021-05-06 12:19:42,536 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 14 18) the Hoare annotation is: true [2021-05-06 12:19:42,537 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 12:19:42,542 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,542 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post5_5,QUANTIFIED] [2021-05-06 12:19:42,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,547 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,547 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,548 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,548 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,548 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,548 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post5_5,QUANTIFIED] [2021-05-06 12:19:42,548 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,548 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,548 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,548 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,548 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 12:19:42 BoogieIcfgContainer [2021-05-06 12:19:42,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 12:19:42,550 INFO L168 Benchmark]: Toolchain (without parser) took 1324.33 ms. Allocated memory is still 244.3 MB. Free memory was 210.0 MB in the beginning and 152.3 MB in the end (delta: 57.7 MB). Peak memory consumption was 58.8 MB. Max. memory is 8.0 GB. [2021-05-06 12:19:42,550 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 244.3 MB. Free memory is still 226.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 12:19:42,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.01 ms. Allocated memory is still 244.3 MB. Free memory was 209.8 MB in the beginning and 200.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 12:19:42,551 INFO L168 Benchmark]: Boogie Preprocessor took 62.39 ms. Allocated memory is still 244.3 MB. Free memory was 200.1 MB in the beginning and 228.3 MB in the end (delta: -28.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. [2021-05-06 12:19:42,551 INFO L168 Benchmark]: RCFGBuilder took 245.46 ms. Allocated memory is still 244.3 MB. Free memory was 228.3 MB in the beginning and 214.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 12:19:42,552 INFO L168 Benchmark]: TraceAbstraction took 855.56 ms. Allocated memory is still 244.3 MB. Free memory was 214.2 MB in the beginning and 152.3 MB in the end (delta: 61.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. [2021-05-06 12:19:42,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 244.3 MB. Free memory is still 226.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 155.01 ms. Allocated memory is still 244.3 MB. Free memory was 209.8 MB in the beginning and 200.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.39 ms. Allocated memory is still 244.3 MB. Free memory was 200.1 MB in the beginning and 228.3 MB in the end (delta: -28.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 245.46 ms. Allocated memory is still 244.3 MB. Free memory was 228.3 MB in the beginning and 214.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 855.56 ms. Allocated memory is still 244.3 MB. Free memory was 214.2 MB in the beginning and 152.3 MB in the end (delta: 61.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post5_5,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post5_5,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] * 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 662.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.3ms, AutomataDifference: 203.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 118.5ms, InitialAbstractionConstructionTime: 13.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 25 SDtfs, 18 SDslu, 31 SDs, 0 SdLazy, 41 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 226.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 20 LocationsWithAnnotation, 26 PreInvPairs, 35 NumberOfFragments, 145 HoareAnnotationTreeSize, 26 FomulaSimplifications, 73 FormulaSimplificationTreeSizeReduction, 33.0ms HoareSimplificationTime, 20 FomulaSimplificationsInter, 292 FormulaSimplificationTreeSizeReductionInter, 78.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant [2021-05-06 12:19:42,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post5_5,QUANTIFIED] [2021-05-06 12:19:42,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,557 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,558 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,558 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,558 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,558 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,558 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,558 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_#t~post5_5,QUANTIFIED] [2021-05-06 12:19:42,558 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,558 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,558 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_10,QUANTIFIED] [2021-05-06 12:19:42,559 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] [2021-05-06 12:19:42,559 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_9,QUANTIFIED] Derived loop invariant: (\exists v_main_~i~0_9 : int, v_main_#t~post5_5 : int, v_main_~j~0_10 : int :: (((((v_main_~i~0_9 < i && i < 101) && j + v_main_~i~0_9 * 2 == i * 2 + v_main_~j~0_10) || ((v_main_~i~0_9 == i && v_main_~j~0_10 == j) && aux-i++-aux == v_main_#t~post5_5)) && 2 * v_main_~i~0_9 <= v_main_~j~0_10) && v_main_~j~0_10 <= 2 * v_main_~i~0_9) && v_main_~i~0_9 <= 0) - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...