/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-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:36:53,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:36:53,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:36:53,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:36:53,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 11:36:53,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 11:36:53,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 11:36:53,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 11:36:53,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 11:36:53,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 11:36:53,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 11:36:53,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 11:36:53,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 11:36:53,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 11:36:53,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 11:36:53,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 11:36:53,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 11:36:53,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:36:53,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:36:53,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:36:53,537 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 11:36:53,543 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:36:53,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:36:53,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:36:53,544 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:36:53,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:36:53,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:36:53,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:36:53,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:36:53,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:36:53,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:36:53,545 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:36:53,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:36:53,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:36:53,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:36:53,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:36:53,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:36:53,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:36:53,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:36:53,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:36:53,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:36:53,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:36:53,547 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:36:53,547 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:36:53,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:36:53,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:36:53,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:36:53,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:36:53,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:36:53,800 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:36:53,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2021-05-06 11:36:53,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbdbce246/4686564b79794d4c8b0454690fc5c4d9/FLAG704415b0c [2021-05-06 11:36:54,216 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:36:54,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2021-05-06 11:36:54,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbdbce246/4686564b79794d4c8b0454690fc5c4d9/FLAG704415b0c [2021-05-06 11:36:54,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbdbce246/4686564b79794d4c8b0454690fc5c4d9 [2021-05-06 11:36:54,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:36:54,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:36:54,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:36:54,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:36:54,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:36:54,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:36:54" (1/1) ... [2021-05-06 11:36:54,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c11fab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:54, skipping insertion in model container [2021-05-06 11:36:54,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:36:54" (1/1) ... [2021-05-06 11:36:54,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:36:54,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:36:54,343 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i[891,904] [2021-05-06 11:36:54,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:36:54,354 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:36:54,375 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-new/count_by_1_variant.i[891,904] [2021-05-06 11:36:54,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:36:54,388 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:36:54,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:54 WrapperNode [2021-05-06 11:36:54,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:36:54,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:36:54,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:36:54,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:36:54,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:54" (1/1) ... [2021-05-06 11:36:54,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:54" (1/1) ... [2021-05-06 11:36:54,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:54" (1/1) ... [2021-05-06 11:36:54,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:54" (1/1) ... [2021-05-06 11:36:54,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:54" (1/1) ... [2021-05-06 11:36:54,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:54" (1/1) ... [2021-05-06 11:36:54,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:54" (1/1) ... [2021-05-06 11:36:54,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:36:54,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:36:54,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:36:54,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:36:54,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:54" (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 11:36:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:36:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:36:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:36:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 11:36:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:36:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:36:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:36:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:36:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 11:36:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 11:36:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:36:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:36:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 11:36:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:36:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 11:36:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:36:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:36:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:36:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:36:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:36:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:36:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:36:54,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:36:54,716 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 11:36:54,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:36:54 BoogieIcfgContainer [2021-05-06 11:36:54,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:36:54,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:36:54,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:36:54,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:36:54,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:36:54" (1/3) ... [2021-05-06 11:36:54,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c03dec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:36:54, skipping insertion in model container [2021-05-06 11:36:54,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:36:54" (2/3) ... [2021-05-06 11:36:54,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c03dec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:36:54, skipping insertion in model container [2021-05-06 11:36:54,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:36:54" (3/3) ... [2021-05-06 11:36:54,722 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2021-05-06 11:36:54,726 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:36:54,729 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:36:54,743 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:36:54,759 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:36:54,760 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:36:54,760 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:36:54,760 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:36:54,760 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:36:54,760 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:36:54,760 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:36:54,760 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:36:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 11:36:54,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 11:36:54,791 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:54,791 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:54,791 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:54,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:54,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1307585362, now seen corresponding path program 1 times [2021-05-06 11:36:54,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:54,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365245157] [2021-05-06 11:36:54,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:54,881 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:36:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,078 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 11:36:55,079 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:55,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365245157] [2021-05-06 11:36:55,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1365245157] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:55,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:55,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 11:36:55,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528259134] [2021-05-06 11:36:55,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 11:36:55,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:55,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 11:36:55,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 11:36:55,102 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 11:36:55,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:55,316 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2021-05-06 11:36:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 11:36:55,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 11 [2021-05-06 11:36:55,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:55,322 INFO L225 Difference]: With dead ends: 41 [2021-05-06 11:36:55,322 INFO L226 Difference]: Without dead ends: 22 [2021-05-06 11:36:55,324 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 159.1ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 11:36:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-06 11:36:55,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2021-05-06 11:36:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 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 11:36:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-05-06 11:36:55,359 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 11 [2021-05-06 11:36:55,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:55,360 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-05-06 11:36:55,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 11:36:55,360 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-05-06 11:36:55,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-06 11:36:55,361 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:36:55,361 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:36:55,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:36:55,361 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:36:55,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:36:55,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2000663987, now seen corresponding path program 1 times [2021-05-06 11:36:55,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:36:55,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49139745] [2021-05-06 11:36:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:36:55,414 WARN L240 tifierPushTermWalker]: treesize reduction 3, result has 95.0 percent of original size [2021-05-06 11:36:55,439 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:55,456 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:36:55,470 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-06 11:36:55,473 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-06 11:36:55,483 WARN L245 tifierPushTermWalker]: treesize reduction 3, result has 95.0 percent of original size 57 [2021-05-06 11:36:55,498 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:36:55,503 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:36:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:36:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:36:55,595 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 11:36:55,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:36:55,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:36:55,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:36:55,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:36:55,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:36:55,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:36:55,699 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:36:55,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49139745] [2021-05-06 11:36:55,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [49139745] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:36:55,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:36:55,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-06 11:36:55,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516997884] [2021-05-06 11:36:55,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 11:36:55,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:36:55,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 11:36:55,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-05-06 11:36:55,701 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 8 states have internal predecessors, (12), 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 11:36:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:36:55,836 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-05-06 11:36:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 11:36:55,836 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 8 states have internal predecessors, (12), 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 18 [2021-05-06 11:36:55,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:36:55,837 INFO L225 Difference]: With dead ends: 21 [2021-05-06 11:36:55,837 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 11:36:55,838 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 197.0ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-05-06 11:36:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 11:36:55,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 11:36:55,838 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 11:36:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 11:36:55,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-05-06 11:36:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:36:55,838 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 11:36:55,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 8 states have internal predecessors, (12), 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 11:36:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 11:36:55,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 11:36:55,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:36:55,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 11:36:56,167 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-06 11:36:56,168 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-06 11:36:56,168 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-06 11:36:56,168 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:36:56,168 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 11:36:56,169 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:36:56,169 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:36:56,169 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 11:36:56,169 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 11:36:56,169 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:36:56,169 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-05-06 11:36:56,169 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:36:56,169 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:36:56,170 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:36:56,170 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 30) the Hoare annotation is: true [2021-05-06 11:36:56,170 INFO L194 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (or (and (< main_~i~0 1000001) (< 0 main_~i~0)) (= main_~i~0 0)) (not (= main_~i~0 1000000))) [2021-05-06 11:36:56,170 INFO L194 CegarLoopUtils]: At program point L27-1(lines 26 28) the Hoare annotation is: (and (or (and (< main_~i~0 1000001) (< 0 main_~i~0)) (= main_~i~0 0)) (not (= main_~i~0 1000000))) [2021-05-06 11:36:56,170 INFO L194 CegarLoopUtils]: At program point mainEXIT(lines 24 30) the Hoare annotation is: (<= main_~i~0 1000000) [2021-05-06 11:36:56,170 INFO L194 CegarLoopUtils]: At program point L26-2(lines 26 28) the Hoare annotation is: (or (and (< main_~i~0 1000001) (< 0 main_~i~0)) (= main_~i~0 0)) [2021-05-06 11:36:56,170 INFO L194 CegarLoopUtils]: At program point L26-3(lines 26 28) the Hoare annotation is: (<= main_~i~0 1000000) [2021-05-06 11:36:56,171 INFO L194 CegarLoopUtils]: At program point mainFINAL(lines 24 30) the Hoare annotation is: (<= main_~i~0 1000000) [2021-05-06 11:36:56,171 INFO L194 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (and (not (= v_main_~i~0_BEFORE_CALL_1 0)) (or (not (< 0 v_main_~i~0_BEFORE_CALL_1)) (not (< v_main_~i~0_BEFORE_CALL_1 1000001)))) (not (= (ite (<= v_main_~i~0_BEFORE_CALL_1 1000000) 1 0) |__VERIFIER_assert_#in~cond|)) (= v_main_~i~0_BEFORE_CALL_1 1000000)))) [2021-05-06 11:36:56,171 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-05-06 11:36:56,171 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (and (not (= v_main_~i~0_BEFORE_CALL_1 0)) (or (not (< 0 v_main_~i~0_BEFORE_CALL_1)) (not (< v_main_~i~0_BEFORE_CALL_1 1000001)))) (not (= (ite (<= v_main_~i~0_BEFORE_CALL_1 1000000) 1 0) |__VERIFIER_assert_#in~cond|)) (= v_main_~i~0_BEFORE_CALL_1 1000000)))) [2021-05-06 11:36:56,172 INFO L194 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (and (not (= v_main_~i~0_BEFORE_CALL_1 0)) (or (not (< 0 v_main_~i~0_BEFORE_CALL_1)) (not (< v_main_~i~0_BEFORE_CALL_1 1000001)))) (not (= (ite (<= v_main_~i~0_BEFORE_CALL_1 1000000) 1 0) |__VERIFIER_assert_#in~cond|)) (= v_main_~i~0_BEFORE_CALL_1 1000000))) [2021-05-06 11:36:56,172 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (and (not (= v_main_~i~0_BEFORE_CALL_1 0)) (or (not (< 0 v_main_~i~0_BEFORE_CALL_1)) (not (< v_main_~i~0_BEFORE_CALL_1 1000001)))) (not (= (ite (<= v_main_~i~0_BEFORE_CALL_1 1000000) 1 0) |__VERIFIER_assert_#in~cond|)) (= v_main_~i~0_BEFORE_CALL_1 1000000))) [2021-05-06 11:36:56,172 INFO L194 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (and (not (= v_main_~i~0_BEFORE_CALL_1 0)) (or (not (< 0 v_main_~i~0_BEFORE_CALL_1)) (not (< v_main_~i~0_BEFORE_CALL_1 1000001)))) (not (= (ite (<= v_main_~i~0_BEFORE_CALL_1 1000000) 1 0) |__VERIFIER_assert_#in~cond|)) (= v_main_~i~0_BEFORE_CALL_1 1000000)))) [2021-05-06 11:36:56,186 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,187 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,187 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,188 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,188 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:36:56 BoogieIcfgContainer [2021-05-06 11:36:56,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:36:56,193 INFO L168 Benchmark]: Toolchain (without parser) took 1955.05 ms. Allocated memory was 217.1 MB in the beginning and 321.9 MB in the end (delta: 104.9 MB). Free memory was 182.5 MB in the beginning and 226.2 MB in the end (delta: -43.7 MB). Peak memory consumption was 61.4 MB. Max. memory is 8.0 GB. [2021-05-06 11:36:56,194 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 217.1 MB. Free memory is still 199.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:36:56,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.33 ms. Allocated memory is still 217.1 MB. Free memory was 182.3 MB in the beginning and 172.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-06 11:36:56,195 INFO L168 Benchmark]: Boogie Preprocessor took 41.85 ms. Allocated memory is still 217.1 MB. Free memory was 172.7 MB in the beginning and 200.2 MB in the end (delta: -27.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-05-06 11:36:56,195 INFO L168 Benchmark]: RCFGBuilder took 284.66 ms. Allocated memory is still 217.1 MB. Free memory was 200.2 MB in the beginning and 186.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:36:56,198 INFO L168 Benchmark]: TraceAbstraction took 1472.06 ms. Allocated memory was 217.1 MB in the beginning and 321.9 MB in the end (delta: 104.9 MB). Free memory was 186.5 MB in the beginning and 226.2 MB in the end (delta: -39.6 MB). Peak memory consumption was 65.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:36:56,203 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 217.1 MB. Free memory is still 199.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 152.33 ms. Allocated memory is still 217.1 MB. Free memory was 182.3 MB in the beginning and 172.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.85 ms. Allocated memory is still 217.1 MB. Free memory was 172.7 MB in the beginning and 200.2 MB in the end (delta: -27.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 284.66 ms. Allocated memory is still 217.1 MB. Free memory was 200.2 MB in the beginning and 186.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1472.06 ms. Allocated memory was 217.1 MB in the beginning and 321.9 MB in the end (delta: 104.9 MB). Free memory was 186.5 MB in the beginning and 226.2 MB in the end (delta: -39.6 MB). Peak memory consumption was 65.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] * 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, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1081.6ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 24.0ms, AutomataDifference: 369.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 327.5ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 40 SDslu, 48 SDs, 0 SdLazy, 78 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 356.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=1, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 26.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 20 LocationsWithAnnotation, 32 PreInvPairs, 46 NumberOfFragments, 237 HoareAnnotationTreeSize, 32 FomulaSimplifications, 142 FormulaSimplificationTreeSizeReduction, 43.0ms HoareSimplificationTime, 20 FomulaSimplificationsInter, 843 FormulaSimplificationTreeSizeReductionInter, 269.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (i < 1000001 && 0 < i) || i == 0 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: i <= 1000000 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert [2021-05-06 11:36:56,215 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,216 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,216 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,216 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,216 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,216 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,217 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,217 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,217 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-05-06 11:36:56,217 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || (forall v_main_~i~0_BEFORE_CALL_1 : int :: ((!(v_main_~i~0_BEFORE_CALL_1 == 0) && (!(0 < v_main_~i~0_BEFORE_CALL_1) || !(v_main_~i~0_BEFORE_CALL_1 < 1000001))) || !((if v_main_~i~0_BEFORE_CALL_1 <= 1000000 then 1 else 0) == \old(cond))) || v_main_~i~0_BEFORE_CALL_1 == 1000000) RESULT: Ultimate proved your program to be correct! Received shutdown request...