/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:06:59,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:06:59,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:06:59,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 02:06:59,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:07:00,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:07:00,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:07:00,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:07:00,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:07:00,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:07:00,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:07:00,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:07:00,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:07:00,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:07:00,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:07:00,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:07:00,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:07:00,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:07:00,069 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:07:00,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:07:00,069 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:07:00,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:07:00,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:07:00,070 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:07:00,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:07:00,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:07:00,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:07:00,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:07:00,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:07:00,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:07:00,072 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:07:00,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:07:00,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:07:00,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:07:00,537 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:07:00,539 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:07:00,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-11-07 02:07:00,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50910232/e8a592ede29e4c1abbba543e157a8d35/FLAGb4ce3ac9c [2020-11-07 02:07:01,465 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:07:01,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2020-11-07 02:07:01,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50910232/e8a592ede29e4c1abbba543e157a8d35/FLAGb4ce3ac9c [2020-11-07 02:07:01,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50910232/e8a592ede29e4c1abbba543e157a8d35 [2020-11-07 02:07:01,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:07:01,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:07:01,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:07:01,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:07:01,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:07:01,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:01" (1/1) ... [2020-11-07 02:07:01,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2305d4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:01, skipping insertion in model container [2020-11-07 02:07:01,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:07:01" (1/1) ... [2020-11-07 02:07:01,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:07:01,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:07:02,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:07:02,106 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:07:02,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:07:02,149 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:07:02,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:02 WrapperNode [2020-11-07 02:07:02,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:07:02,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:07:02,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:07:02,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:07:02,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:02" (1/1) ... [2020-11-07 02:07:02,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:02" (1/1) ... [2020-11-07 02:07:02,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:02" (1/1) ... [2020-11-07 02:07:02,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:02" (1/1) ... [2020-11-07 02:07:02,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:02" (1/1) ... [2020-11-07 02:07:02,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:02" (1/1) ... [2020-11-07 02:07:02,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:02" (1/1) ... [2020-11-07 02:07:02,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:07:02,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:07:02,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:07:02,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:07:02,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:07:02,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:07:02,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:07:02,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:07:02,363 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 02:07:02,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 02:07:02,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:07:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:07:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:07:02,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 02:07:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 02:07:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:07:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:07:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 02:07:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 02:07:02,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 02:07:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:07:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:07:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:07:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:07:02,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:07:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:07:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:07:02,794 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:07:02,795 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-07 02:07:02,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:07:02 BoogieIcfgContainer [2020-11-07 02:07:02,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:07:02,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:07:02,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:07:02,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:07:02,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:07:01" (1/3) ... [2020-11-07 02:07:02,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520b5a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:07:02, skipping insertion in model container [2020-11-07 02:07:02,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:07:02" (2/3) ... [2020-11-07 02:07:02,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520b5a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:07:02, skipping insertion in model container [2020-11-07 02:07:02,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:07:02" (3/3) ... [2020-11-07 02:07:02,813 INFO L111 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2020-11-07 02:07:02,842 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:07:02,848 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:07:02,869 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:07:02,903 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:07:02,904 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:07:02,904 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:07:02,904 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:07:02,904 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:07:02,904 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:07:02,905 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:07:02,905 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:07:02,954 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-11-07 02:07:02,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-07 02:07:02,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:02,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:07:02,993 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:03,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:03,016 INFO L82 PathProgramCache]: Analyzing trace with hash -77372705, now seen corresponding path program 1 times [2020-11-07 02:07:03,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:03,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370918262] [2020-11-07 02:07:03,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:03,166 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:03,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:03,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370918262] [2020-11-07 02:07:03,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:03,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 02:07:03,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420185440] [2020-11-07 02:07:03,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 02:07:03,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:03,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 02:07:03,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:07:03,573 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-11-07 02:07:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:03,705 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2020-11-07 02:07:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 02:07:03,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-11-07 02:07:03,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:03,717 INFO L225 Difference]: With dead ends: 91 [2020-11-07 02:07:03,717 INFO L226 Difference]: Without dead ends: 51 [2020-11-07 02:07:03,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:07:03,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-07 02:07:03,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-07 02:07:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-07 02:07:03,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-11-07 02:07:03,841 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 33 [2020-11-07 02:07:03,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:03,843 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-11-07 02:07:03,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 02:07:03,844 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-11-07 02:07:03,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 02:07:03,848 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:03,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:07:03,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:07:03,850 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:03,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:03,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1541004353, now seen corresponding path program 1 times [2020-11-07 02:07:03,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:03,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42280888] [2020-11-07 02:07:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:03,869 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:07:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:04,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:04,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42280888] [2020-11-07 02:07:04,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:04,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 02:07:04,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526259758] [2020-11-07 02:07:04,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 02:07:04,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:04,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 02:07:04,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 02:07:04,212 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 6 states. [2020-11-07 02:07:04,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:04,677 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-11-07 02:07:04,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 02:07:04,678 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-11-07 02:07:04,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:04,680 INFO L225 Difference]: With dead ends: 62 [2020-11-07 02:07:04,680 INFO L226 Difference]: Without dead ends: 58 [2020-11-07 02:07:04,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:07:04,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-07 02:07:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-11-07 02:07:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-07 02:07:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-11-07 02:07:04,703 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 37 [2020-11-07 02:07:04,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:04,704 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-11-07 02:07:04,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 02:07:04,704 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-11-07 02:07:04,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 02:07:04,706 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:04,707 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:07:04,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:07:04,707 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:04,708 INFO L82 PathProgramCache]: Analyzing trace with hash -551766036, now seen corresponding path program 1 times [2020-11-07 02:07:04,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:04,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733913131] [2020-11-07 02:07:04,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:07,137 WARN L194 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-11-07 02:07:07,194 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-07 02:07:07,224 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-11-07 02:07:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:07,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:07,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733913131] [2020-11-07 02:07:07,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:07,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 02:07:07,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967599913] [2020-11-07 02:07:07,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 02:07:07,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:07,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 02:07:07,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:07:07,581 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 12 states. [2020-11-07 02:07:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:08,259 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2020-11-07 02:07:08,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 02:07:08,260 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-11-07 02:07:08,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:08,265 INFO L225 Difference]: With dead ends: 98 [2020-11-07 02:07:08,265 INFO L226 Difference]: Without dead ends: 71 [2020-11-07 02:07:08,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-11-07 02:07:08,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-07 02:07:08,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2020-11-07 02:07:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-07 02:07:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-11-07 02:07:08,285 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 47 [2020-11-07 02:07:08,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:08,286 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-11-07 02:07:08,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 02:07:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-11-07 02:07:08,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-07 02:07:08,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:07:08,288 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:07:08,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:07:08,289 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:07:08,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:07:08,290 INFO L82 PathProgramCache]: Analyzing trace with hash -333827980, now seen corresponding path program 1 times [2020-11-07 02:07:08,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:07:08,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780392637] [2020-11-07 02:07:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:07:10,543 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-11-07 02:07:12,712 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-11-07 02:07:12,722 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 02:07:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:13,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:07:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:13,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:07:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:07:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:07:13,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780392637] [2020-11-07 02:07:13,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:07:13,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-11-07 02:07:13,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113162932] [2020-11-07 02:07:13,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-07 02:07:13,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:07:13,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-07 02:07:13,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-11-07 02:07:13,337 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 18 states. [2020-11-07 02:07:14,548 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-11-07 02:07:14,872 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-11-07 02:07:16,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:07:16,402 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-11-07 02:07:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-07 02:07:16,411 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 53 [2020-11-07 02:07:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:07:16,412 INFO L225 Difference]: With dead ends: 94 [2020-11-07 02:07:16,412 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 02:07:16,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=397, Invalid=2255, Unknown=0, NotChecked=0, Total=2652 [2020-11-07 02:07:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 02:07:16,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 02:07:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 02:07:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 02:07:16,418 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-07 02:07:16,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:07:16,419 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 02:07:16,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-07 02:07:16,421 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 02:07:16,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 02:07:16,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:07:16,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 02:07:17,040 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 20 [2020-11-07 02:07:17,195 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2020-11-07 02:07:17,553 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2020-11-07 02:07:17,659 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2020-11-07 02:07:17,789 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 22 [2020-11-07 02:07:17,953 WARN L194 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 23 [2020-11-07 02:07:18,092 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2020-11-07 02:07:18,239 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2020-11-07 02:07:18,351 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 22 [2020-11-07 02:07:18,596 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 22 [2020-11-07 02:07:18,774 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 17 [2020-11-07 02:07:18,914 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2020-11-07 02:07:19,285 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-11-07 02:07:19,285 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-07 02:07:19,286 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 02:07:19,286 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 02:07:19,286 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 02:07:19,286 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-11-07 02:07:19,286 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:07:19,287 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 02:07:19,287 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-11-07 02:07:19,287 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 02:07:19,287 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 02:07:19,287 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 02:07:19,288 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-07 02:07:19,288 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 02:07:19,288 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:07:19,288 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:07:19,288 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:07:19,288 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 02:07:19,289 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 02:07:19,289 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-07 02:07:19,289 INFO L266 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-07 02:07:19,289 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-07 02:07:19,289 INFO L266 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-11-07 02:07:19,289 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-07 02:07:19,290 INFO L262 CegarLoopResult]: At program point L31-1(lines 31 33) the Hoare annotation is: (= main_~k~0 0) [2020-11-07 02:07:19,290 INFO L262 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: (= main_~k~0 0) [2020-11-07 02:07:19,290 INFO L269 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-11-07 02:07:19,290 INFO L262 CegarLoopResult]: At program point L31-4(line 31) the Hoare annotation is: (and (<= main_~i~0 1000000) (= main_~k~0 0)) [2020-11-07 02:07:19,290 INFO L262 CegarLoopResult]: At program point L31-5(lines 31 33) the Hoare annotation is: (= main_~k~0 0) [2020-11-07 02:07:19,291 INFO L262 CegarLoopResult]: At program point L31-6(lines 24 55) the Hoare annotation is: (= main_~k~0 0) [2020-11-07 02:07:19,291 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 24 55) the Hoare annotation is: true [2020-11-07 02:07:19,291 INFO L262 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= main_~j~0 0))) (or (<= main_~i~0 1000000) (and (= |__VERIFIER_assert_#in~cond| 1) .cse0 (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= main_~n~0 0)) (and .cse0 (<= main_~tmp___1~0 1000000) (or (<= 0 main_~k~0) (<= main_~n~0 1)) (= (+ main_~tmp___1~0 1) main_~i~0)))) [2020-11-07 02:07:19,291 INFO L262 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 (= main_~j~0 0))) (or (and (<= 0 main_~k~0) .cse0 (<= main_~tmp___1~0 1000000) (or (<= 1 main_~k~0) (<= main_~i~0 1)) (= (+ main_~tmp___1~0 1) main_~i~0)) (and (= main_~k~0 0) (= main_~i~0 0) .cse0))) [2020-11-07 02:07:19,291 INFO L262 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (let ((.cse0 (= main_~tmp___1~0 main_~i~0))) (or (and (<= 0 main_~k~0) (<= main_~i~0 1) .cse0) (and (<= 1 main_~k~0) (<= main_~i~0 1000000) .cse0))) [2020-11-07 02:07:19,292 INFO L262 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (and (<= main_~i~0 1000000) (= main_~k~0 0)) [2020-11-07 02:07:19,292 INFO L262 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (= main_~k~0 0) [2020-11-07 02:07:19,292 INFO L262 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (= main_~j~0 0))) (or (and (= |__VERIFIER_assert_#in~cond| 1) .cse0 (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= main_~n~0 0)) (and (<= main_~i~0 1000000) .cse0 (or (<= 1 main_~k~0) (<= main_~n~0 1))))) [2020-11-07 02:07:19,292 INFO L262 CegarLoopResult]: At program point L45-2(lines 45 53) the Hoare annotation is: (let ((.cse0 (= main_~j~0 0))) (or (and (<= 1 main_~k~0) .cse0 (<= main_~tmp___1~0 1000000) (= (+ main_~tmp___1~0 1) main_~i~0)) (and (<= main_~i~0 1000000) (<= 0 main_~k~0) .cse0))) [2020-11-07 02:07:19,292 INFO L269 CegarLoopResult]: At program point L45-3(lines 45 53) the Hoare annotation is: true [2020-11-07 02:07:19,293 INFO L262 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (and (<= 0 main_~k~0) (<= main_~tmp___1~0 1000000) (= (+ main_~tmp___1~0 1) main_~i~0)) [2020-11-07 02:07:19,293 INFO L262 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (= main_~k~0 0) [2020-11-07 02:07:19,293 INFO L269 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: true [2020-11-07 02:07:19,293 INFO L262 CegarLoopResult]: At program point L50(lines 50 52) the Hoare annotation is: (or (and (= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= main_~n~0 0) (= main_~j~0 1)) (and (or (<= main_~n~0 main_~j~0) (<= 0 main_~k~0)) (<= main_~i~0 1000000) (= main_~j~0 0))) [2020-11-07 02:07:19,293 INFO L262 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 (= main_~j~0 0))) (or (and (<= 1 main_~k~0) .cse0 (<= main_~tmp___1~0 1000000) (= (+ main_~tmp___1~0 1) main_~i~0)) (and (<= main_~i~0 1000000) (<= 0 main_~k~0) .cse0))) [2020-11-07 02:07:19,294 INFO L262 CegarLoopResult]: At program point L46-1(line 46) the Hoare annotation is: (let ((.cse0 (= main_~j~0 0))) (or (and (<= 1 main_~k~0) .cse0 (<= main_~tmp___1~0 1000000) (= (+ main_~tmp___1~0 1) main_~i~0)) (and (<= main_~i~0 1000000) (<= 0 main_~k~0) .cse0))) [2020-11-07 02:07:19,294 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 24 55) the Hoare annotation is: true [2020-11-07 02:07:19,294 INFO L262 CegarLoopResult]: At program point L38-1(lines 38 42) the Hoare annotation is: (let ((.cse0 (<= 0 (+ |main_#t~nondet5| 2147483648))) (.cse1 (<= |main_#t~nondet5| 2147483647))) (or (and .cse0 (= main_~k~0 0) (= main_~i~0 0) .cse1) (and .cse0 (<= 0 main_~k~0) (<= main_~tmp___1~0 1000000) (or (<= 1 main_~k~0) (<= main_~i~0 1)) .cse1 (= (+ main_~tmp___1~0 1) main_~i~0)))) [2020-11-07 02:07:19,294 INFO L262 CegarLoopResult]: At program point L38-2(line 38) the Hoare annotation is: (or (and (= main_~k~0 0) (= main_~i~0 0)) (and (<= 0 (+ |main_#t~nondet5| 2147483648)) (<= 0 main_~k~0) (<= main_~tmp___1~0 1000000) (or (<= 1 main_~k~0) (<= main_~i~0 1)) (<= |main_#t~nondet5| 2147483647) (= (+ main_~tmp___1~0 1) main_~i~0))) [2020-11-07 02:07:19,295 INFO L262 CegarLoopResult]: At program point L38-4(line 38) the Hoare annotation is: (let ((.cse0 (<= 0 (+ |main_#t~nondet5| 2147483648))) (.cse1 (not (= |main_#t~nondet5| 0))) (.cse2 (<= |main_#t~nondet5| 2147483647))) (or (and (<= 1 main_~k~0) .cse0 (<= main_~i~0 1000000) .cse1 .cse2 (= (+ main_~tmp___1~0 1) main_~i~0)) (and .cse0 .cse1 (= main_~k~0 0) .cse2 (<= main_~i~0 1)))) [2020-11-07 02:07:19,295 INFO L262 CegarLoopResult]: At program point L34-1(lines 34 36) the Hoare annotation is: (= main_~k~0 0) [2020-11-07 02:07:19,295 INFO L262 CegarLoopResult]: At program point L38-5(lines 38 42) the Hoare annotation is: (or (and (= main_~k~0 0) (= main_~i~0 0)) (and (<= 0 main_~k~0) (<= main_~tmp___1~0 1000000) (or (<= 1 main_~k~0) (<= main_~i~0 1)) (= (+ main_~tmp___1~0 1) main_~i~0))) [2020-11-07 02:07:19,295 INFO L262 CegarLoopResult]: At program point L38-6(lines 38 42) the Hoare annotation is: (or (and (= main_~k~0 0) (= main_~i~0 0)) (and (<= 0 main_~k~0) (<= main_~tmp___1~0 1000000) (or (<= 1 main_~k~0) (<= main_~i~0 1)) (= (+ main_~tmp___1~0 1) main_~i~0))) [2020-11-07 02:07:19,295 INFO L262 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (= main_~k~0 0) (= main_~i~0 0)) [2020-11-07 02:07:19,296 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 55) the Hoare annotation is: true [2020-11-07 02:07:19,296 INFO L262 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (= main_~k~0 0) (= main_~i~0 0)) [2020-11-07 02:07:19,296 INFO L262 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: (and (= main_~k~0 0) (= main_~i~0 0)) [2020-11-07 02:07:19,296 INFO L269 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-11-07 02:07:19,296 INFO L262 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (or (and (<= 1 main_~k~0) (<= main_~i~0 1000000) (= (+ main_~tmp___1~0 1) main_~i~0)) (and (= main_~k~0 0) (<= main_~i~0 1))) [2020-11-07 02:07:19,297 INFO L262 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (= main_~k~0 0) [2020-11-07 02:07:19,297 INFO L262 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)) (not (<= 0 main_~k~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)))) [2020-11-07 02:07:19,297 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-07 02:07:19,297 INFO L262 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)) (not (<= 0 main_~k~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)))) [2020-11-07 02:07:19,297 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 main_~k~0))) (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (= main_~n~0 0)) (not (= main_~j~0 0)))) [2020-11-07 02:07:19,298 INFO L262 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)) (not (<= 0 main_~k~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)))) [2020-11-07 02:07:19,298 INFO L262 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= 0 main_~k~0))) (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not (= main_~n~0 0)) (not (= main_~j~0 0)))) [2020-11-07 02:07:19,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:07:19 BoogieIcfgContainer [2020-11-07 02:07:19,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:07:19,330 INFO L168 Benchmark]: Toolchain (without parser) took 17504.54 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 112.7 MB in the beginning and 102.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 84.7 MB. Max. memory is 8.0 GB. [2020-11-07 02:07:19,330 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 153.1 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:07:19,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.28 ms. Allocated memory is still 153.1 MB. Free memory was 112.0 MB in the beginning and 129.6 MB in the end (delta: -17.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:07:19,333 INFO L168 Benchmark]: Boogie Preprocessor took 47.09 ms. Allocated memory is still 153.1 MB. Free memory was 129.6 MB in the beginning and 128.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:07:19,334 INFO L168 Benchmark]: RCFGBuilder took 599.01 ms. Allocated memory is still 153.1 MB. Free memory was 128.0 MB in the beginning and 120.8 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2020-11-07 02:07:19,335 INFO L168 Benchmark]: TraceAbstraction took 16526.19 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 120.3 MB in the beginning and 102.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 92.3 MB. Max. memory is 8.0 GB. [2020-11-07 02:07:19,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 153.1 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 317.28 ms. Allocated memory is still 153.1 MB. Free memory was 112.0 MB in the beginning and 129.6 MB in the end (delta: -17.5 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.09 ms. Allocated memory is still 153.1 MB. Free memory was 129.6 MB in the beginning and 128.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 599.01 ms. Allocated memory is still 153.1 MB. Free memory was 128.0 MB in the beginning and 120.8 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16526.19 ms. Allocated memory was 153.1 MB in the beginning and 186.6 MB in the end (delta: 33.6 MB). Free memory was 120.3 MB in the beginning and 102.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 92.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: (((1 <= k && j == 0) && tmp___1 <= 1000000) && tmp___1 + 1 == i) || ((i <= 1000000 && 0 <= k) && j == 0) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (k == 0 && i == 0) || (((0 <= k && tmp___1 <= 1000000) && (1 <= k || i <= 1)) && tmp___1 + 1 == i) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: k == 0 - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - 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)) || !(0 <= k)) && (((!(\old(cond) == 1) || !(n == 0)) || \old(cond) == cond) || !(j == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 179 SDtfs, 514 SDslu, 203 SDs, 0 SdLazy, 732 SolverSat, 160 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 60 LocationsWithAnnotation, 114 PreInvPairs, 195 NumberOfFragments, 673 HoareAnnotationTreeSize, 114 FomulaSimplifications, 3054 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 60 FomulaSimplificationsInter, 2520 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...