/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/terminator_03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:47:29,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:47:29,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:47:29,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:47:29,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:47:29,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:47:29,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:47:29,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:47:29,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:47:29,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:47:29,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:47:29,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:47:29,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:47:29,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:47:29,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:47:29,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:47:29,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:47:29,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:47:29,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:47:29,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:47:29,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:47:29,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:47:29,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:47:29,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:47:29,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:47:29,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:47:29,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:47:29,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:47:29,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:47:29,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:47:29,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:47:29,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:47:29,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:47:29,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:47:29,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:47:29,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:47:29,722 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:47:29,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:47:29,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:47:29,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:47:29,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:47:29,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:47:29,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:47:29,724 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:47:29,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:47:30,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:47:30,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:47:30,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:47:30,119 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:47:30,120 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:47:30,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-2.i [2021-02-24 04:47:30,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0171c026/2eb0649a61c54346ad2beabf1f6bf5d4/FLAG368f5060c [2021-02-24 04:47:30,882 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:47:30,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-2.i [2021-02-24 04:47:30,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0171c026/2eb0649a61c54346ad2beabf1f6bf5d4/FLAG368f5060c [2021-02-24 04:47:31,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0171c026/2eb0649a61c54346ad2beabf1f6bf5d4 [2021-02-24 04:47:31,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:47:31,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:47:31,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:31,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:47:31,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:47:31,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:31" (1/1) ... [2021-02-24 04:47:31,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6163dfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:31, skipping insertion in model container [2021-02-24 04:47:31,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:31" (1/1) ... [2021-02-24 04:47:31,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:47:31,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:47:31,416 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/terminator_03-2.i[902,915] [2021-02-24 04:47:31,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:31,436 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:47:31,452 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/terminator_03-2.i[902,915] [2021-02-24 04:47:31,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:31,473 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:47:31,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:31 WrapperNode [2021-02-24 04:47:31,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:31,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:47:31,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:47:31,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:47:31,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:31" (1/1) ... [2021-02-24 04:47:31,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:31" (1/1) ... [2021-02-24 04:47:31,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:31" (1/1) ... [2021-02-24 04:47:31,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:31" (1/1) ... [2021-02-24 04:47:31,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:31" (1/1) ... [2021-02-24 04:47:31,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:31" (1/1) ... [2021-02-24 04:47:31,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:31" (1/1) ... [2021-02-24 04:47:31,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:47:31,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:47:31,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:47:31,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:47:31,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:31" (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 [2021-02-24 04:47:31,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:47:31,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:47:31,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:47:31,619 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:47:31,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:47:31,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:47:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:47:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:47:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 04:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 04:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:47:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:47:31,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:47:31,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-24 04:47:31,622 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:47:31,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:47:31,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:47:31,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:47:31,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:47:31,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:47:31,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:47:31,962 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:47:31,962 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:47:31,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:31 BoogieIcfgContainer [2021-02-24 04:47:31,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:47:31,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:47:31,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:47:31,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:47:31,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:47:31" (1/3) ... [2021-02-24 04:47:31,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491d3bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:31, skipping insertion in model container [2021-02-24 04:47:31,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:31" (2/3) ... [2021-02-24 04:47:31,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491d3bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:31, skipping insertion in model container [2021-02-24 04:47:31,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:31" (3/3) ... [2021-02-24 04:47:32,003 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_03-2.i [2021-02-24 04:47:32,018 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:47:32,023 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:47:32,043 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:47:32,069 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:47:32,070 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:47:32,070 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:47:32,070 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:47:32,070 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:47:32,070 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:47:32,071 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:47:32,071 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:47:32,088 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-02-24 04:47:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-24 04:47:32,098 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:32,099 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] [2021-02-24 04:47:32,099 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:32,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:32,106 INFO L82 PathProgramCache]: Analyzing trace with hash 2105662523, now seen corresponding path program 1 times [2021-02-24 04:47:32,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:32,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745036691] [2021-02-24 04:47:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:32,206 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:32,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:32,391 WARN L141 QuantifierPusher]: treesize reduction 24, result has 4.0 percent of original size [2021-02-24 04:47:32,392 WARN L147 QuantifierPusher]: treesize reduction 24, result has 4.0 percent of original size 1 [2021-02-24 04:47:32,395 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-24 04:47:32,397 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-24 04:47:32,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:32,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:32,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:32,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:32,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:32,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:32,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745036691] [2021-02-24 04:47:32,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:32,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:47:32,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472632953] [2021-02-24 04:47:32,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:47:32,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:32,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:47:32,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:47:32,559 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 6 states. [2021-02-24 04:47:32,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:32,817 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-02-24 04:47:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:47:32,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2021-02-24 04:47:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:32,826 INFO L225 Difference]: With dead ends: 47 [2021-02-24 04:47:32,826 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:47:32,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:47:32,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:47:32,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:47:32,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:47:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:47:32,859 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-02-24 04:47:32,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:32,859 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:47:32,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:47:32,859 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:47:32,859 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:47:32,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:47:32,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:47:33,240 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 04:47:33,241 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 04:47:33,241 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 04:47:33,241 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 04:47:33,241 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 04:47:33,241 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:47:33,242 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:47:33,242 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 04:47:33,242 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 04:47:33,243 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 04:47:33,244 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 04:47:33,244 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)|)) [2021-02-24 04:47:33,244 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 04:47:33,244 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:47:33,245 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:47:33,245 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:47:33,246 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:47:33,246 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:47:33,246 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-24 04:47:33,246 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-24 04:47:33,247 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-24 04:47:33,247 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-24 04:47:33,247 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-24 04:47:33,248 INFO L192 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: true [2021-02-24 04:47:33,248 INFO L192 CegarLoopUtils]: At program point L29(lines 29 33) the Hoare annotation is: true [2021-02-24 04:47:33,248 INFO L185 CegarLoopUtils]: At program point L29-1(lines 29 33) the Hoare annotation is: (or (<= main_~y~0 0) (<= 100 main_~x~0)) [2021-02-24 04:47:33,249 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-24 04:47:33,250 INFO L192 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: true [2021-02-24 04:47:33,250 INFO L192 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: true [2021-02-24 04:47:33,250 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 25 36) the Hoare annotation is: true [2021-02-24 04:47:33,250 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 25 36) the Hoare annotation is: true [2021-02-24 04:47:33,251 INFO L185 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (or (<= main_~y~0 0) (<= 100 main_~x~0)) [2021-02-24 04:47:33,251 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 25 36) the Hoare annotation is: true [2021-02-24 04:47:33,251 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-24 04:47:33,251 INFO L192 CegarLoopUtils]: At program point L30-2(lines 30 32) the Hoare annotation is: true [2021-02-24 04:47:33,252 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-24 04:47:33,252 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-24 04:47:33,254 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-24 04:47:33,254 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 04:47:33,255 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-24 04:47:33,255 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 04:47:33,256 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:47:33,256 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:47:33,257 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))) [2021-02-24 04:47:33,257 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:47:33,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:47:33 BoogieIcfgContainer [2021-02-24 04:47:33,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:47:33,284 INFO L168 Benchmark]: Toolchain (without parser) took 2072.19 ms. Allocated memory is still 157.3 MB. Free memory was 133.7 MB in the beginning and 113.9 MB in the end (delta: 19.8 MB). Peak memory consumption was 62.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:33,287 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 157.3 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:47:33,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.51 ms. Allocated memory is still 157.3 MB. Free memory was 132.7 MB in the beginning and 123.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:33,292 INFO L168 Benchmark]: Boogie Preprocessor took 37.51 ms. Allocated memory is still 157.3 MB. Free memory was 123.1 MB in the beginning and 121.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:33,293 INFO L168 Benchmark]: RCFGBuilder took 454.47 ms. Allocated memory is still 157.3 MB. Free memory was 121.6 MB in the beginning and 140.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:33,295 INFO L168 Benchmark]: TraceAbstraction took 1310.38 ms. Allocated memory is still 157.3 MB. Free memory was 140.1 MB in the beginning and 113.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 67.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:33,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 157.3 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.51 ms. Allocated memory is still 157.3 MB. Free memory was 132.7 MB in the beginning and 123.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.51 ms. Allocated memory is still 157.3 MB. Free memory was 123.1 MB in the beginning and 121.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 454.47 ms. Allocated memory is still 157.3 MB. Free memory was 121.6 MB in the beginning and 140.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1310.38 ms. Allocated memory is still 157.3 MB. Free memory was 140.1 MB in the beginning and 113.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 67.6 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 - ProcedureContractResult [Line: 25]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 26 SDslu, 48 SDs, 0 SdLazy, 63 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 35 LocationsWithAnnotation, 42 PreInvPairs, 52 NumberOfFragments, 98 HoareAnnotationTreeSize, 42 FomulaSimplifications, 66 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 35 FomulaSimplificationsInter, 481 FormulaSimplificationTreeSizeReductionInter, 0.1s 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...