/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loops/trex01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:21:18,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:21:18,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:21:18,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:21:18,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:21:18,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:21:18,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:21:18,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:21:18,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:21:18,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:21:18,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:21:18,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:21:18,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:21:18,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:21:18,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:21:18,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:21:18,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:21:18,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:21:18,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:21:18,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:21:18,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:21:18,829 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:21:18,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:21:18,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:21:18,835 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:21:18,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:21:18,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:21:18,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:21:18,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:21:18,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:21:18,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:21:18,838 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:21:18,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:21:18,838 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:21:18,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:21:18,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:21:18,839 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:21:18,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:21:18,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:21:18,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:21:18,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:21:18,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:21:18,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:21:18,841 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:21:18,842 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:21:19,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:21:19,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:21:19,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:21:19,306 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:21:19,306 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:21:19,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-2.i [2021-02-22 02:21:19,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938fcb4ea/71ef60185c164dc3b2e83d8770a4fb4d/FLAGc51ccf91d [2021-02-22 02:21:20,083 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:21:20,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-2.i [2021-02-22 02:21:20,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938fcb4ea/71ef60185c164dc3b2e83d8770a4fb4d/FLAGc51ccf91d [2021-02-22 02:21:20,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938fcb4ea/71ef60185c164dc3b2e83d8770a4fb4d [2021-02-22 02:21:20,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:21:20,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:21:20,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:20,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:21:20,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:21:20,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:20" (1/1) ... [2021-02-22 02:21:20,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f74385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:20, skipping insertion in model container [2021-02-22 02:21:20,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:20" (1/1) ... [2021-02-22 02:21:20,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:21:20,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:21:20,639 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-2.i[895,908] [2021-02-22 02:21:20,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:20,668 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:21:20,684 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-2.i[895,908] [2021-02-22 02:21:20,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:20,711 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:21:20,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:20 WrapperNode [2021-02-22 02:21:20,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:20,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:21:20,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:21:20,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:21:20,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:20" (1/1) ... [2021-02-22 02:21:20,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:20" (1/1) ... [2021-02-22 02:21:20,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:20" (1/1) ... [2021-02-22 02:21:20,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:20" (1/1) ... [2021-02-22 02:21:20,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:20" (1/1) ... [2021-02-22 02:21:20,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:20" (1/1) ... [2021-02-22 02:21:20,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:20" (1/1) ... [2021-02-22 02:21:20,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:21:20,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:21:20,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:21:20,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:21:20,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:20" (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 [2021-02-22 02:21:20,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:21:20,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:21:20,872 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:21:20,872 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:21:20,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:21:20,872 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-02-22 02:21:20,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:21:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:21:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:21:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:21:20,873 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:21:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:21:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:21:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:21:20,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:21:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-22 02:21:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:21:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-02-22 02:21:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:21:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:21:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:21:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:21:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:21:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:21:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:21:21,483 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:21:21,484 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-22 02:21:21,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:21 BoogieIcfgContainer [2021-02-22 02:21:21,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:21:21,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:21:21,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:21:21,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:21:21,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:21:20" (1/3) ... [2021-02-22 02:21:21,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b573e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:21, skipping insertion in model container [2021-02-22 02:21:21,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:20" (2/3) ... [2021-02-22 02:21:21,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b573e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:21, skipping insertion in model container [2021-02-22 02:21:21,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:21" (3/3) ... [2021-02-22 02:21:21,498 INFO L111 eAbstractionObserver]: Analyzing ICFG trex01-2.i [2021-02-22 02:21:21,506 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:21:21,511 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:21:21,534 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:21:21,571 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:21:21,571 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:21:21,571 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:21:21,571 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:21:21,571 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:21:21,572 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:21:21,572 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:21:21,572 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:21:21,597 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2021-02-22 02:21:21,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-22 02:21:21,612 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:21,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:21:21,614 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:21,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:21,624 INFO L82 PathProgramCache]: Analyzing trace with hash 608481097, now seen corresponding path program 1 times [2021-02-22 02:21:21,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:21,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231330278] [2021-02-22 02:21:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:21,738 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:21,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:21,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:21,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:21,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:22,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:22,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:22,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:22,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231330278] [2021-02-22 02:21:22,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:22,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:21:22,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842949177] [2021-02-22 02:21:22,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:21:22,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:22,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:21:22,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:21:22,112 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 3 states. [2021-02-22 02:21:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:22,244 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2021-02-22 02:21:22,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:21:22,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2021-02-22 02:21:22,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:22,256 INFO L225 Difference]: With dead ends: 83 [2021-02-22 02:21:22,256 INFO L226 Difference]: Without dead ends: 35 [2021-02-22 02:21:22,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:21:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-22 02:21:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-02-22 02:21:22,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-22 02:21:22,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-02-22 02:21:22,312 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2021-02-22 02:21:22,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:22,313 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-02-22 02:21:22,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:21:22,313 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-02-22 02:21:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-22 02:21:22,315 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:22,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:21:22,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:21:22,316 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:22,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:22,316 INFO L82 PathProgramCache]: Analyzing trace with hash 603863492, now seen corresponding path program 1 times [2021-02-22 02:21:22,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:22,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670357152] [2021-02-22 02:21:22,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:22,324 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:22,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:22,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:22,403 WARN L141 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size [2021-02-22 02:21:22,403 WARN L147 QuantifierPusher]: treesize reduction 6, result has 33.3 percent of original size 3 [2021-02-22 02:21:22,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:22,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:22,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:22,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:22,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:22,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:22,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:22,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:22,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:22,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670357152] [2021-02-22 02:21:22,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:22,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:21:22,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364502003] [2021-02-22 02:21:22,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:21:22,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:22,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:21:22,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:21:22,478 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 6 states. [2021-02-22 02:21:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:22,626 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-02-22 02:21:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:21:22,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2021-02-22 02:21:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:22,628 INFO L225 Difference]: With dead ends: 35 [2021-02-22 02:21:22,628 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 02:21:22,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:21:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 02:21:22,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 02:21:22,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 02:21:22,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 02:21:22,631 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-02-22 02:21:22,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:22,631 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 02:21:22,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:21:22,631 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 02:21:22,631 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 02:21:22,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:21:22,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 02:21:23,139 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-22 02:21:23,139 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-22 02:21:23,140 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-22 02:21:23,140 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-22 02:21:23,140 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-22 02:21:23,140 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 02:21:23,140 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 02:21:23,141 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-22 02:21:23,141 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-22 02:21:23,141 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-22 02:21:23,141 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-22 02:21:23,141 INFO L185 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)|)) [2021-02-22 02:21:23,142 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-22 02:21:23,142 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 02:21:23,142 INFO L192 CegarLoopUtils]: At program point L31(lines 25 47) the Hoare annotation is: true [2021-02-22 02:21:23,142 INFO L185 CegarLoopUtils]: At program point L27(lines 27 29) the Hoare annotation is: (<= 1 f_~z~0) [2021-02-22 02:21:23,142 INFO L192 CegarLoopUtils]: At program point L44(line 44) the Hoare annotation is: true [2021-02-22 02:21:23,142 INFO L192 CegarLoopUtils]: At program point fEXIT(lines 25 47) the Hoare annotation is: true [2021-02-22 02:21:23,143 INFO L192 CegarLoopUtils]: At program point fENTRY(lines 25 47) the Hoare annotation is: true [2021-02-22 02:21:23,143 INFO L192 CegarLoopUtils]: At program point L36-2(lines 25 47) the Hoare annotation is: true [2021-02-22 02:21:23,143 INFO L192 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: true [2021-02-22 02:21:23,143 INFO L192 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: true [2021-02-22 02:21:23,143 INFO L192 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: true [2021-02-22 02:21:23,144 INFO L192 CegarLoopUtils]: At program point L37-1(line 37) the Hoare annotation is: true [2021-02-22 02:21:23,144 INFO L192 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: true [2021-02-22 02:21:23,144 INFO L192 CegarLoopUtils]: At program point L38(lines 38 45) the Hoare annotation is: true [2021-02-22 02:21:23,144 INFO L192 CegarLoopUtils]: At program point L38-2(lines 36 46) the Hoare annotation is: true [2021-02-22 02:21:23,144 INFO L192 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: true [2021-02-22 02:21:23,145 INFO L185 CegarLoopUtils]: At program point L30-2(line 30) the Hoare annotation is: (<= 1 f_~z~0) [2021-02-22 02:21:23,145 INFO L185 CegarLoopUtils]: At program point L30-3(line 30) the Hoare annotation is: (<= 1 f_~z~0) [2021-02-22 02:21:23,145 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-22 02:21:23,145 INFO L185 CegarLoopUtils]: At program point L30-4(line 30) the Hoare annotation is: (<= 1 f_~z~0) [2021-02-22 02:21:23,145 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-22 02:21:23,145 INFO L192 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: true [2021-02-22 02:21:23,146 INFO L192 CegarLoopUtils]: At program point L26-3(line 26) the Hoare annotation is: true [2021-02-22 02:21:23,146 INFO L192 CegarLoopUtils]: At program point L26-4(line 26) the Hoare annotation is: true [2021-02-22 02:21:23,146 INFO L192 CegarLoopUtils]: At program point L26-5(line 26) the Hoare annotation is: true [2021-02-22 02:21:23,146 INFO L192 CegarLoopUtils]: At program point L26-6(line 26) the Hoare annotation is: true [2021-02-22 02:21:23,146 INFO L192 CegarLoopUtils]: At program point L26-7(line 26) the Hoare annotation is: true [2021-02-22 02:21:23,147 INFO L192 CegarLoopUtils]: At program point L26-8(line 26) the Hoare annotation is: true [2021-02-22 02:21:23,147 INFO L192 CegarLoopUtils]: At program point L26-9(line 26) the Hoare annotation is: true [2021-02-22 02:21:23,147 INFO L192 CegarLoopUtils]: At program point L39(lines 39 40) the Hoare annotation is: true [2021-02-22 02:21:23,147 INFO L192 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: true [2021-02-22 02:21:23,147 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 02:21:23,147 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 02:21:23,148 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 02:21:23,148 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 02:21:23,148 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-22 02:21:23,148 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-22 02:21:23,148 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-22 02:21:23,148 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-22 02:21:23,149 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-22 02:21:23,149 INFO L192 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: true [2021-02-22 02:21:23,149 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 48 56) the Hoare annotation is: true [2021-02-22 02:21:23,149 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 48 56) the Hoare annotation is: true [2021-02-22 02:21:23,149 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 48 56) the Hoare annotation is: true [2021-02-22 02:21:23,149 INFO L192 CegarLoopUtils]: At program point L53(line 53) the Hoare annotation is: true [2021-02-22 02:21:23,150 INFO L192 CegarLoopUtils]: At program point L53-1(lines 50 54) the Hoare annotation is: true [2021-02-22 02:21:23,150 INFO L192 CegarLoopUtils]: At program point L51(line 51) the Hoare annotation is: true [2021-02-22 02:21:23,150 INFO L192 CegarLoopUtils]: At program point L50(lines 50 54) the Hoare annotation is: true [2021-02-22 02:21:23,150 INFO L192 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-02-22 02:21:23,150 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-22 02:21:23,150 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-02-22 02:21:23,151 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 02:21:23,151 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 02:21:23,151 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-22 02:21:23,151 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-22 02:21:23,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:21:23 BoogieIcfgContainer [2021-02-22 02:21:23,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:21:23,172 INFO L168 Benchmark]: Toolchain (without parser) took 2745.58 ms. Allocated memory is still 151.0 MB. Free memory was 128.2 MB in the beginning and 48.8 MB in the end (delta: 79.4 MB). Peak memory consumption was 80.8 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:23,173 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:21:23,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.14 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:23,174 INFO L168 Benchmark]: Boogie Preprocessor took 42.00 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:23,175 INFO L168 Benchmark]: RCFGBuilder took 730.29 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 127.7 MB in the end (delta: -12.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:23,176 INFO L168 Benchmark]: TraceAbstraction took 1680.56 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 48.8 MB in the end (delta: 78.6 MB). Peak memory consumption was 78.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:21:23,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.14 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.00 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 730.29 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 127.7 MB in the end (delta: -12.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1680.56 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 48.8 MB in the end (delta: 78.6 MB). Peak memory consumption was 78.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 25]: Procedure Contract for f Derived contract for procedure f: 1 - ProcedureContractResult [Line: 48]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 66 SDslu, 48 SDs, 0 SdLazy, 73 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 57 LocationsWithAnnotation, 93 PreInvPairs, 130 NumberOfFragments, 102 HoareAnnotationTreeSize, 93 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 57 FomulaSimplificationsInter, 1009 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...