/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_nondet.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 11:37:06,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 11:37:06,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 11:37:06,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 11:37:06,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 11:37:06,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 11:37:06,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 11:37:06,554 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 11:37:06,566 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 11:37:06,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 11:37:06,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 11:37:06,568 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 11:37:06,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 11:37:06,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 11:37:06,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 11:37:06,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 11:37:06,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 11:37:06,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 11:37:06,570 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 11:37:06,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 11:37:06,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 11:37:06,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 11:37:06,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 11:37:06,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 11:37:06,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 11:37:06,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 11:37:06,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 11:37:06,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 11:37:06,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-06 11:37:06,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-06 11:37:06,572 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-06 11:37:06,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 11:37:06,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 11:37:06,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 11:37:06,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 11:37:06,875 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 11:37:06,875 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 11:37:06,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_nondet.i [2021-05-06 11:37:06,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051a674fc/6909fd0b585945bebfad7028d675455c/FLAG3686b8c3e [2021-05-06 11:37:07,254 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 11:37:07,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_nondet.i [2021-05-06 11:37:07,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051a674fc/6909fd0b585945bebfad7028d675455c/FLAG3686b8c3e [2021-05-06 11:37:07,676 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/051a674fc/6909fd0b585945bebfad7028d675455c [2021-05-06 11:37:07,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 11:37:07,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-06 11:37:07,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 11:37:07,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 11:37:07,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 11:37:07,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:37:07" (1/1) ... [2021-05-06 11:37:07,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bf37c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:37:07, skipping insertion in model container [2021-05-06 11:37:07,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 11:37:07" (1/1) ... [2021-05-06 11:37:07,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 11:37:07,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 11:37:07,799 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_nondet.i[891,904] [2021-05-06 11:37:07,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:37:07,809 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 11:37:07,831 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_nondet.i[891,904] [2021-05-06 11:37:07,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 11:37:07,877 INFO L208 MainTranslator]: Completed translation [2021-05-06 11:37:07,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:37:07 WrapperNode [2021-05-06 11:37:07,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 11:37:07,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 11:37:07,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 11:37:07,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 11:37:07,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:37:07" (1/1) ... [2021-05-06 11:37:07,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:37:07" (1/1) ... [2021-05-06 11:37:07,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:37:07" (1/1) ... [2021-05-06 11:37:07,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:37:07" (1/1) ... [2021-05-06 11:37:07,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:37:07" (1/1) ... [2021-05-06 11:37:07,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:37:07" (1/1) ... [2021-05-06 11:37:07,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:37:07" (1/1) ... [2021-05-06 11:37:07,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 11:37:07,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 11:37:07,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 11:37:07,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 11:37:07,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:37:07" (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 11:37:07,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 11:37:07,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 11:37:07,953 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 11:37:07,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 11:37:07,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 11:37:07,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 11:37:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 11:37:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 11:37:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 11:37:07,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 11:37:08,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 11:37:08,172 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 11:37:08,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:37:08 BoogieIcfgContainer [2021-05-06 11:37:08,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 11:37:08,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 11:37:08,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 11:37:08,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 11:37:08,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 11:37:07" (1/3) ... [2021-05-06 11:37:08,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102a4740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:37:08, skipping insertion in model container [2021-05-06 11:37:08,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 11:37:07" (2/3) ... [2021-05-06 11:37:08,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102a4740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 11:37:08, skipping insertion in model container [2021-05-06 11:37:08,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 11:37:08" (3/3) ... [2021-05-06 11:37:08,195 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i [2021-05-06 11:37:08,199 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-06 11:37:08,201 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 11:37:08,229 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 11:37:08,241 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 11:37:08,242 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-06 11:37:08,242 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-06 11:37:08,242 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 11:37:08,242 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 11:37:08,242 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 11:37:08,242 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 11:37:08,242 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 11:37:08,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 11:37:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-06 11:37:08,262 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:08,263 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:08,263 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:08,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:08,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2089905556, now seen corresponding path program 1 times [2021-05-06 11:37:08,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:08,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845778103] [2021-05-06 11:37:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:08,326 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-06 11:37:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:08,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:08,490 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 11:37:08,492 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:08,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845778103] [2021-05-06 11:37:08,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [845778103] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:08,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:08,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 11:37:08,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202527502] [2021-05-06 11:37:08,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 11:37:08,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:08,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 11:37:08,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 11:37:08,507 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 11:37:08,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:08,622 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2021-05-06 11:37:08,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 11:37:08,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 11:37:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:08,627 INFO L225 Difference]: With dead ends: 36 [2021-05-06 11:37:08,627 INFO L226 Difference]: Without dead ends: 15 [2021-05-06 11:37:08,630 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 11:37:08,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-06 11:37:08,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-05-06 11:37:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:37:08,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-06 11:37:08,659 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2021-05-06 11:37:08,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:08,660 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-06 11:37:08,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 11:37:08,661 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-06 11:37:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 11:37:08,662 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:08,662 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:08,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 11:37:08,663 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:08,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:08,663 INFO L82 PathProgramCache]: Analyzing trace with hash -545306800, now seen corresponding path program 1 times [2021-05-06 11:37:08,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:08,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120174998] [2021-05-06 11:37:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:08,738 WARN L240 tifierPushTermWalker]: treesize reduction 34, result has 68.2 percent of original size [2021-05-06 11:37:08,791 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:37:08,794 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:37:08,803 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-06 11:37:08,807 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-06 11:37:08,825 WARN L245 tifierPushTermWalker]: treesize reduction 34, result has 68.2 percent of original size 73 [2021-05-06 11:37:08,855 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:37:08,862 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:37:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:08,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:08,921 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 11:37:08,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:37:08,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:37:08,952 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:08,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120174998] [2021-05-06 11:37:08,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1120174998] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:08,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:08,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 11:37:08,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959304065] [2021-05-06 11:37:08,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 11:37:08,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:08,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 11:37:08,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-06 11:37:08,954 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:37:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:09,078 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-05-06 11:37:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 11:37:09,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-06 11:37:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:09,080 INFO L225 Difference]: With dead ends: 21 [2021-05-06 11:37:09,080 INFO L226 Difference]: Without dead ends: 16 [2021-05-06 11:37:09,081 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-05-06 11:37:09,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-06 11:37:09,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-06 11:37:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:37:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-06 11:37:09,089 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-05-06 11:37:09,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:09,089 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-06 11:37:09,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 11:37:09,090 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-06 11:37:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-06 11:37:09,092 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 11:37:09,093 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 11:37:09,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 11:37:09,093 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 11:37:09,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 11:37:09,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1046323724, now seen corresponding path program 2 times [2021-05-06 11:37:09,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-06 11:37:09,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142977680] [2021-05-06 11:37:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 11:37:09,121 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 92.6 percent of original size [2021-05-06 11:37:09,158 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:37:09,163 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-06 11:37:09,188 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 92.6 percent of original size 87 [2021-05-06 11:37:09,223 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:37:09,227 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:37:09,241 WARN L240 tifierPushTermWalker]: treesize reduction 34, result has 68.2 percent of original size [2021-05-06 11:37:09,271 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:37:09,272 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-06 11:37:09,275 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-05-06 11:37:09,278 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-06 11:37:09,293 WARN L245 tifierPushTermWalker]: treesize reduction 34, result has 68.2 percent of original size 73 [2021-05-06 11:37:09,311 INFO L73 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 3 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2021-05-06 11:37:09,314 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-06 11:37:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 11:37:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 11:37:09,414 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 11:37:09,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:37:09,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:37:09,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 11:37:09,579 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-06 11:37:09,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142977680] [2021-05-06 11:37:09,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [142977680] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 11:37:09,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 11:37:09,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-06 11:37:09,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621390787] [2021-05-06 11:37:09,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 11:37:09,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-06 11:37:09,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 11:37:09,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-05-06 11:37:09,581 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 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 11:37:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 11:37:09,866 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-05-06 11:37:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 11:37:09,867 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 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 15 [2021-05-06 11:37:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 11:37:09,867 INFO L225 Difference]: With dead ends: 16 [2021-05-06 11:37:09,867 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 11:37:09,868 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 335.2ms TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-05-06 11:37:09,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 11:37:09,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 11:37:09,869 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 11:37:09,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 11:37:09,869 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-05-06 11:37:09,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 11:37:09,869 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 11:37:09,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 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 11:37:09,869 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 11:37:09,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 11:37:09,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-06 11:37:09,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-06 11:37:10,078 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-05-06 11:37:10,078 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-05-06 11:37:10,078 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-05-06 11:37:10,078 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:37:10,078 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 11:37:10,079 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:37:10,079 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-06 11:37:10,079 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-06 11:37:10,079 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-06 11:37:10,079 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-06 11:37:10,079 INFO L198 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-05-06 11:37:10,079 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:37:10,079 INFO L198 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:37:10,079 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-05-06 11:37:10,079 INFO L201 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: true [2021-05-06 11:37:10,079 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2021-05-06 11:37:10,079 INFO L194 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (<= 0 (+ main_~j~0 2147483648))) (.cse1 (<= main_~j~0 2147483647))) (or (and .cse0 (= main_~k~0 0) (= main_~i~0 0) .cse1) (and .cse0 (exists ((v_main_~j~0_13 Int)) (and (let ((.cse2 (= v_main_~j~0_13 main_~i~0))) (or (and (= main_~k~0 1) .cse2) (and (< 1 main_~k~0) .cse2))) (<= 1 v_main_~j~0_13) (< v_main_~j~0_13 1000000))) .cse1))) [2021-05-06 11:37:10,079 INFO L194 CegarLoopUtils]: At program point L27-2(lines 27 32) the Hoare annotation is: (let ((.cse0 (<= 1 main_~j~0)) (.cse1 (< main_~j~0 1000000))) (or (and .cse0 (or (= main_~k~0 1) (< 1 main_~k~0)) (= main_~i~0 main_~j~0) .cse1) (and .cse0 (exists ((v_main_~j~0_13 Int)) (and (<= 1 v_main_~j~0_13) (< v_main_~j~0_13 1000000) (let ((.cse2 (= main_~i~0 (+ main_~j~0 v_main_~j~0_13)))) (or (and .cse2 (= main_~k~0 2)) (and (< 2 main_~k~0) .cse2))))) .cse1) (and (= main_~k~0 0) (= main_~i~0 0)))) [2021-05-06 11:37:10,080 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 24 35) the Hoare annotation is: true [2021-05-06 11:37:10,080 INFO L194 CegarLoopUtils]: At program point L27-3(lines 27 32) the Hoare annotation is: false [2021-05-06 11:37:10,080 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 24 35) the Hoare annotation is: true [2021-05-06 11:37:10,080 INFO L201 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-05-06 11:37:10,080 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-05-06 11:37:10,080 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-05-06 11:37:10,080 INFO L201 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: true [2021-05-06 11:37:10,080 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: true [2021-05-06 11:37:10,080 INFO L201 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: true [2021-05-06 11:37:10,086 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,086 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,087 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,087 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,091 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,091 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,091 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,091 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 11:37:10 BoogieIcfgContainer [2021-05-06 11:37:10,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 11:37:10,093 INFO L168 Benchmark]: Toolchain (without parser) took 2412.66 ms. Allocated memory was 182.5 MB in the beginning and 219.2 MB in the end (delta: 36.7 MB). Free memory was 147.6 MB in the beginning and 106.5 MB in the end (delta: 41.1 MB). Peak memory consumption was 78.5 MB. Max. memory is 8.0 GB. [2021-05-06 11:37:10,093 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 182.5 MB. Free memory is still 164.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 11:37:10,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.84 ms. Allocated memory is still 182.5 MB. Free memory was 147.4 MB in the beginning and 166.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-05-06 11:37:10,093 INFO L168 Benchmark]: Boogie Preprocessor took 28.89 ms. Allocated memory is still 182.5 MB. Free memory was 166.5 MB in the beginning and 164.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 11:37:10,093 INFO L168 Benchmark]: RCFGBuilder took 281.38 ms. Allocated memory is still 182.5 MB. Free memory was 164.8 MB in the beginning and 150.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 11:37:10,094 INFO L168 Benchmark]: TraceAbstraction took 1901.68 ms. Allocated memory was 182.5 MB in the beginning and 219.2 MB in the end (delta: 36.7 MB). Free memory was 150.6 MB in the beginning and 106.5 MB in the end (delta: 44.1 MB). Peak memory consumption was 81.3 MB. Max. memory is 8.0 GB. [2021-05-06 11:37:10,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 182.5 MB. Free memory is still 164.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 194.84 ms. Allocated memory is still 182.5 MB. Free memory was 147.4 MB in the beginning and 166.5 MB in the end (delta: -19.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.89 ms. Allocated memory is still 182.5 MB. Free memory was 166.5 MB in the beginning and 164.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 281.38 ms. Allocated memory is still 182.5 MB. Free memory was 164.8 MB in the beginning and 150.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1901.68 ms. Allocated memory was 182.5 MB in the beginning and 219.2 MB in the end (delta: 36.7 MB). Free memory was 150.6 MB in the beginning and 106.5 MB in the end (delta: 44.1 MB). Peak memory consumption was 81.3 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_~j~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,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: 1629.8ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 17.4ms, AutomataDifference: 547.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 207.7ms, InitialAbstractionConstructionTime: 5.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32 SDtfs, 33 SDslu, 56 SDs, 0 SdLazy, 101 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 113.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 516.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 20 LocationsWithAnnotation, 32 PreInvPairs, 46 NumberOfFragments, 149 HoareAnnotationTreeSize, 32 FomulaSimplifications, 186 FormulaSimplificationTreeSizeReduction, 70.2ms HoareSimplificationTime, 20 FomulaSimplificationsInter, 216 FormulaSimplificationTreeSizeReductionInter, 130.3ms 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: 27]: Loop Invariant [2021-05-06 11:37:10,098 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,098 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,098 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,098 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,098 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,098 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,098 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] [2021-05-06 11:37:10,098 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~j~0_13,QUANTIFIED] Derived loop invariant: ((((1 <= j && (k == 1 || 1 < k)) && i == j) && j < 1000000) || ((1 <= j && (\exists v_main_~j~0_13 : int :: (1 <= v_main_~j~0_13 && v_main_~j~0_13 < 1000000) && ((i == j + v_main_~j~0_13 && k == 2) || (2 < k && i == j + v_main_~j~0_13)))) && j < 1000000)) || (k == 0 && i == 0) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...