/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-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:34:59,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:34:59,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:34:59,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:35:00,024 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 11:35:00,036 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:35:00,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:35:00,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:35:00,039 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:35:00,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:35:00,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:35:00,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:35:00,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:35:00,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:35:00,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:35:00,040 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:35:00,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:35:00,041 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:35:00,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:35:00,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:35:00,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:35:00,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:35:00,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:35:00,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:35:00,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:35:00,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:35:00,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:35:00,042 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:35:00,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:35:00,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:35:00,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:35:00,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:35:00,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:35:00,330 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:35:00,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2021-05-06 11:35:00,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b704b961/d0d641efafee4f4db3a88d8508593706/FLAGc1643acef [2021-05-06 11:35:00,778 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:35:00,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2021-05-06 11:35:00,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b704b961/d0d641efafee4f4db3a88d8508593706/FLAGc1643acef [2021-05-06 11:35:00,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b704b961/d0d641efafee4f4db3a88d8508593706 [2021-05-06 11:35:00,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:35:00,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:35:00,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:35:00,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:35:00,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:35:00,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:35:00" (1/1) ... [2021-05-06 11:35:00,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2879c00a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:00, skipping insertion in model container [2021-05-06 11:35:00,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:35:00" (1/1) ... [2021-05-06 11:35:00,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:35:00,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:35:00,934 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-invgen/fragtest_simple.i[893,906] [2021-05-06 11:35:00,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:35:00,951 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:35:00,989 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-invgen/fragtest_simple.i[893,906] [2021-05-06 11:35:00,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:35:01,010 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:35:01,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:01 WrapperNode [2021-05-06 11:35:01,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:35:01,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:35:01,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:35:01,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:35:01,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:01" (1/1) ... [2021-05-06 11:35:01,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:01" (1/1) ... [2021-05-06 11:35:01,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:01" (1/1) ... [2021-05-06 11:35:01,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:01" (1/1) ... [2021-05-06 11:35:01,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:01" (1/1) ... [2021-05-06 11:35:01,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:01" (1/1) ... [2021-05-06 11:35:01,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:01" (1/1) ... [2021-05-06 11:35:01,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:35:01,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:35:01,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:35:01,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:35:01,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:01" (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 11:35:01,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:35:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:35:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:35:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 11:35:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:35:01,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:35:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:35:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:35:01,102 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 11:35:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 11:35:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:35:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:35:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 11:35:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:35:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 11:35:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:35:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:35:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:35:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:35:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:35:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:35:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:35:01,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:35:01,321 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-06 11:35:01,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:35:01 BoogieIcfgContainer [2021-05-06 11:35:01,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:35:01,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:35:01,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:35:01,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:35:01,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:35:00" (1/3) ... [2021-05-06 11:35:01,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d447919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:35:01, skipping insertion in model container [2021-05-06 11:35:01,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:35:01" (2/3) ... [2021-05-06 11:35:01,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d447919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:35:01, skipping insertion in model container [2021-05-06 11:35:01,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:35:01" (3/3) ... [2021-05-06 11:35:01,334 INFO L111 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2021-05-06 11:35:01,338 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:35:01,340 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:35:01,361 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:35:01,374 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:35:01,374 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:35:01,374 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:35:01,374 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:35:01,374 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:35:01,374 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:35:01,374 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:35:01,374 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:35:01,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 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 11:35:01,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-06 11:35:01,387 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:01,388 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:01,388 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:01,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1613859161, now seen corresponding path program 1 times [2021-05-06 11:35:01,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:01,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925769394] [2021-05-06 11:35:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:01,462 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:01,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:01,614 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 11:35:01,616 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:01,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925769394] [2021-05-06 11:35:01,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [925769394] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:01,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:01,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 11:35:01,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405147715] [2021-05-06 11:35:01,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 11:35:01,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:01,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 11:35:01,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:35:01,632 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 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 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 11:35:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:01,696 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2021-05-06 11:35:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 11:35:01,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 16 [2021-05-06 11:35:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:01,702 INFO L225 Difference]: With dead ends: 48 [2021-05-06 11:35:01,702 INFO L226 Difference]: Without dead ends: 23 [2021-05-06 11:35:01,704 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 11:35:01,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-06 11:35:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-05-06 11:35:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:35:01,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-05-06 11:35:01,732 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2021-05-06 11:35:01,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:01,732 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-05-06 11:35:01,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 11:35:01,733 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-05-06 11:35:01,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-06 11:35:01,733 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:01,734 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:01,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:35:01,734 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:01,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:01,736 INFO L82 PathProgramCache]: Analyzing trace with hash 20877373, now seen corresponding path program 1 times [2021-05-06 11:35:01,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:01,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604258122] [2021-05-06 11:35:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:01,742 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:35:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:01,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:01,852 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 11:35:01,853 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:01,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604258122] [2021-05-06 11:35:01,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1604258122] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:01,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:01,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 11:35:01,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049273928] [2021-05-06 11:35:01,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 11:35:01,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:01,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 11:35:01,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 11:35:01,857 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 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 11:35:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:02,077 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-06 11:35:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 11:35:02,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 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 18 [2021-05-06 11:35:02,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:02,078 INFO L225 Difference]: With dead ends: 32 [2021-05-06 11:35:02,078 INFO L226 Difference]: Without dead ends: 30 [2021-05-06 11:35:02,079 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.0ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 11:35:02,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-06 11:35:02,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-05-06 11:35:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:35:02,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2021-05-06 11:35:02,085 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2021-05-06 11:35:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:02,085 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2021-05-06 11:35:02,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 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 11:35:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-05-06 11:35:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-06 11:35:02,086 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:35:02,086 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:35:02,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:35:02,086 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:35:02,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:35:02,086 INFO L82 PathProgramCache]: Analyzing trace with hash -295388463, now seen corresponding path program 1 times [2021-05-06 11:35:02,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:35:02,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115951622] [2021-05-06 11:35:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:35:02,144 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 86.6 percent of original size [2021-05-06 11:35:02,153 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:02,165 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:35:02,184 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-06 11:35:02,190 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-05-06 11:35:02,219 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 86.6 percent of original size 71 [2021-05-06 11:35:02,243 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=2, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:35:02,247 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:35:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:02,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:35:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:35:02,371 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 11:35:02,492 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:35:02,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115951622] [2021-05-06 11:35:02,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [115951622] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:35:02,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:35:02,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-06 11:35:02,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359592965] [2021-05-06 11:35:02,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 11:35:02,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:35:02,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 11:35:02,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-05-06 11:35:02,496 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:35:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:35:02,878 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2021-05-06 11:35:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 11:35:02,879 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-05-06 11:35:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:35:02,880 INFO L225 Difference]: With dead ends: 44 [2021-05-06 11:35:02,880 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 11:35:02,881 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 371.8ms TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2021-05-06 11:35:02,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 11:35:02,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 11:35:02,882 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 11:35:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 11:35:02,882 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-05-06 11:35:02,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:35:02,882 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 11:35:02,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 11:35:02,882 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 11:35:02,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 11:35:02,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-06 11:35:02,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 11:35:03,350 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-06 11:35:03,350 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-06 11:35:03,350 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-06 11:35:03,350 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:35:03,351 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 11:35:03,351 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:35:03,351 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:35:03,351 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 11:35:03,351 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 11:35:03,351 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:35:03,351 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-05-06 11:35:03,351 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:35:03,351 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:35:03,351 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:35:03,351 INFO L194 CegarLoopUtils]: At program point L31-1(lines 31 33) the Hoare annotation is: (= main_~k~0 0) [2021-05-06 11:35:03,351 INFO L194 CegarLoopUtils]: At program point L31-3(lines 31 33) the Hoare annotation is: (= main_~k~0 0) [2021-05-06 11:35:03,351 INFO L194 CegarLoopUtils]: At program point L31-4(lines 24 55) the Hoare annotation is: (= main_~k~0 0) [2021-05-06 11:35:03,352 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 24 55) the Hoare annotation is: true [2021-05-06 11:35:03,352 INFO L194 CegarLoopUtils]: At program point L45-2(lines 45 53) the Hoare annotation is: (or (<= 0 main_~k~0) (and (<= 0 (+ main_~k~0 1)) (< main_~j~0 main_~n~0))) [2021-05-06 11:35:03,352 INFO L201 CegarLoopUtils]: At program point L45-3(lines 45 53) the Hoare annotation is: true [2021-05-06 11:35:03,352 INFO L194 CegarLoopUtils]: At program point L50(lines 50 52) the Hoare annotation is: (<= 0 (+ main_~k~0 1)) [2021-05-06 11:35:03,352 INFO L194 CegarLoopUtils]: At program point L46(line 46) the Hoare annotation is: (<= 0 main_~k~0) [2021-05-06 11:35:03,352 INFO L194 CegarLoopUtils]: At program point L46-1(line 46) the Hoare annotation is: (<= 0 main_~k~0) [2021-05-06 11:35:03,352 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 24 55) the Hoare annotation is: true [2021-05-06 11:35:03,352 INFO L194 CegarLoopUtils]: At program point L38-1(lines 38 42) the Hoare annotation is: (<= 0 main_~k~0) [2021-05-06 11:35:03,352 INFO L194 CegarLoopUtils]: At program point L38-3(lines 38 42) the Hoare annotation is: (<= 0 main_~k~0) [2021-05-06 11:35:03,352 INFO L194 CegarLoopUtils]: At program point L38-4(lines 38 42) the Hoare annotation is: (<= 0 main_~k~0) [2021-05-06 11:35:03,352 INFO L194 CegarLoopUtils]: At program point L34-1(lines 34 36) the Hoare annotation is: (= main_~k~0 0) [2021-05-06 11:35:03,352 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 55) the Hoare annotation is: true [2021-05-06 11:35:03,352 INFO L194 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (= main_~n~0 0)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (= main_~j~0 0)))) [2021-05-06 11:35:03,353 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-05-06 11:35:03,353 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (= main_~n~0 0)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (= main_~j~0 0)))) [2021-05-06 11:35:03,353 INFO L194 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:35:03,353 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-05-06 11:35:03,353 INFO L194 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (= main_~n~0 0)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (= main_~j~0 0)))) [2021-05-06 11:35:03,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:35:03 BoogieIcfgContainer [2021-05-06 11:35:03,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:35:03,369 INFO L168 Benchmark]: Toolchain (without parser) took 2571.14 ms. Allocated memory was 233.8 MB in the beginning and 282.1 MB in the end (delta: 48.2 MB). Free memory was 199.5 MB in the beginning and 214.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 105.0 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:03,369 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 233.8 MB. Free memory is still 216.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:35:03,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.09 ms. Allocated memory is still 233.8 MB. Free memory was 199.3 MB in the beginning and 217.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:03,372 INFO L168 Benchmark]: Boogie Preprocessor took 33.85 ms. Allocated memory is still 233.8 MB. Free memory was 217.4 MB in the beginning and 215.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:03,372 INFO L168 Benchmark]: RCFGBuilder took 276.17 ms. Allocated memory is still 233.8 MB. Free memory was 215.7 MB in the beginning and 200.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:03,373 INFO L168 Benchmark]: TraceAbstraction took 2045.41 ms. Allocated memory was 233.8 MB in the beginning and 282.1 MB in the end (delta: 48.2 MB). Free memory was 199.6 MB in the beginning and 214.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 106.0 MB. Max. memory is 8.0 GB. [2021-05-06 11:35:03,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 233.8 MB. Free memory is still 216.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 209.09 ms. Allocated memory is still 233.8 MB. Free memory was 199.3 MB in the beginning and 217.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.85 ms. Allocated memory is still 233.8 MB. Free memory was 217.4 MB in the beginning and 215.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 276.17 ms. Allocated memory is still 233.8 MB. Free memory was 215.7 MB in the beginning and 200.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2045.41 ms. Allocated memory was 233.8 MB in the beginning and 282.1 MB in the end (delta: 48.2 MB). Free memory was 199.6 MB in the beginning and 214.9 MB in the end (delta: -15.4 MB). Peak memory consumption was 106.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1510.7ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 7.9ms, AutomataDifference: 692.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 466.8ms, InitialAbstractionConstructionTime: 6.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 63 SDtfs, 118 SDslu, 49 SDs, 0 SdLazy, 182 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 151.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 570.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 28 LocationsWithAnnotation, 46 PreInvPairs, 79 NumberOfFragments, 162 HoareAnnotationTreeSize, 46 FomulaSimplifications, 556 FormulaSimplificationTreeSizeReduction, 102.2ms HoareSimplificationTime, 28 FomulaSimplificationsInter, 788 FormulaSimplificationTreeSizeReductionInter, 349.8ms 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: 45]: Loop Invariant Derived loop invariant: 0 <= k || (0 <= k + 1 && j < n) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: k == 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 <= k - 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: (\old(cond) == 0 || !(cond == 0)) && (((!(\old(cond) == 1) || !(n == 0)) || \old(cond) == cond) || !(j == 0)) RESULT: Ultimate proved your program to be correct! Received shutdown request...