/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/trex04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:47:36,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:47:36,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:47:36,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:47:36,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:47:36,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:47:36,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:47:36,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:47:36,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:47:36,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:47:36,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:47:36,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:47:36,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:47:36,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:47:36,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:47:36,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:47:36,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:47:36,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:47:36,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:47:36,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:47:36,172 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 04:47:36,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:47:36,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:47:36,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:47:36,200 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:47:36,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:47:36,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:47:36,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:47:36,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:47:36,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:47:36,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:47:36,202 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:47:36,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:47:36,202 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:47:36,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:47:36,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:47:36,203 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:47:36,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:47:36,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:47:36,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:47:36,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:47:36,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:47:36,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:47:36,204 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:47:36,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:47:36,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:47:36,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:47:36,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:47:36,607 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:47:36,608 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:47:36,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex04.c [2021-02-24 04:47:36,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aef7a030/6de2c106e5bd41b1b2487413be049bd1/FLAG666f51342 [2021-02-24 04:47:37,267 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:47:37,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c [2021-02-24 04:47:37,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aef7a030/6de2c106e5bd41b1b2487413be049bd1/FLAG666f51342 [2021-02-24 04:47:37,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aef7a030/6de2c106e5bd41b1b2487413be049bd1 [2021-02-24 04:47:37,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:47:37,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:47:37,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:37,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:47:37,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:47:37,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:37" (1/1) ... [2021-02-24 04:47:37,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770ffbda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:37, skipping insertion in model container [2021-02-24 04:47:37,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:37" (1/1) ... [2021-02-24 04:47:37,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:47:37,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:47:37,904 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/trex04.c[405,418] [2021-02-24 04:47:37,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:37,944 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:47:37,960 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/trex04.c[405,418] [2021-02-24 04:47:37,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:38,007 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:47:38,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:38 WrapperNode [2021-02-24 04:47:38,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:38,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:47:38,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:47:38,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:47:38,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:38" (1/1) ... [2021-02-24 04:47:38,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:38" (1/1) ... [2021-02-24 04:47:38,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:38" (1/1) ... [2021-02-24 04:47:38,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:38" (1/1) ... [2021-02-24 04:47:38,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:38" (1/1) ... [2021-02-24 04:47:38,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:38" (1/1) ... [2021-02-24 04:47:38,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:38" (1/1) ... [2021-02-24 04:47:38,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:47:38,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:47:38,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:47:38,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:47:38,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:38" (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 04:47:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:47:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:47:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:47:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:47:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:47:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-02-24 04:47:38,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:47:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:47:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:47:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:47:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:47:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:47:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:47:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-24 04:47:38,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:47:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-02-24 04:47:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:47:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:47:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:47:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:47:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:47:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:47:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:47:38,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:47:38,625 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:47:38,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:38 BoogieIcfgContainer [2021-02-24 04:47:38,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:47:38,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:47:38,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:47:38,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:47:38,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:47:37" (1/3) ... [2021-02-24 04:47:38,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd16a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:38, skipping insertion in model container [2021-02-24 04:47:38,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:38" (2/3) ... [2021-02-24 04:47:38,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd16a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:38, skipping insertion in model container [2021-02-24 04:47:38,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:38" (3/3) ... [2021-02-24 04:47:38,641 INFO L111 eAbstractionObserver]: Analyzing ICFG trex04.c [2021-02-24 04:47:38,648 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:47:38,654 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:47:38,694 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:47:38,731 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:47:38,732 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:47:38,732 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:47:38,732 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:47:38,732 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:47:38,732 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:47:38,733 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:47:38,733 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:47:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2021-02-24 04:47:38,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-24 04:47:38,770 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:38,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:47:38,772 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:38,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:38,780 INFO L82 PathProgramCache]: Analyzing trace with hash 540236980, now seen corresponding path program 1 times [2021-02-24 04:47:38,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:38,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635255380] [2021-02-24 04:47:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:38,872 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:39,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:39,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:39,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:39,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:39,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:39,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:39,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:39,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:39,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:39,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:39,106 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:39,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:39,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:39,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:39,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:39,213 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 04:47:39,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635255380] [2021-02-24 04:47:39,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:39,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:47:39,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490730452] [2021-02-24 04:47:39,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:47:39,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:39,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:47:39,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:47:39,239 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 6 states. [2021-02-24 04:47:39,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:39,690 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2021-02-24 04:47:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:47:39,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2021-02-24 04:47:39,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:39,699 INFO L225 Difference]: With dead ends: 75 [2021-02-24 04:47:39,699 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:47:39,703 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 04:47:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:47:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:47:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:47:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:47:39,730 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-02-24 04:47:39,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:39,731 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:47:39,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:47:39,731 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:47:39,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:47:39,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:47:39,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:47:40,254 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 04:47:40,255 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 04:47:40,255 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 04:47:40,255 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 04:47:40,255 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 04:47:40,255 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:47:40,256 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 04:47:40,256 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:47:40,256 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 04:47:40,256 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 04:47:40,256 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 04:47:40,257 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 04:47:40,257 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:47:40,257 INFO L192 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: true [2021-02-24 04:47:40,257 INFO L192 CegarLoopUtils]: At program point fooEXIT(lines 18 25) the Hoare annotation is: true [2021-02-24 04:47:40,257 INFO L192 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: true [2021-02-24 04:47:40,257 INFO L192 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: true [2021-02-24 04:47:40,257 INFO L192 CegarLoopUtils]: At program point L23-1(line 23) the Hoare annotation is: true [2021-02-24 04:47:40,258 INFO L192 CegarLoopUtils]: At program point fooENTRY(lines 18 25) the Hoare annotation is: true [2021-02-24 04:47:40,258 INFO L192 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: true [2021-02-24 04:47:40,258 INFO L192 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: true [2021-02-24 04:47:40,258 INFO L192 CegarLoopUtils]: At program point L23-2(line 23) the Hoare annotation is: true [2021-02-24 04:47:40,258 INFO L192 CegarLoopUtils]: At program point L21-1(line 21) the Hoare annotation is: true [2021-02-24 04:47:40,258 INFO L192 CegarLoopUtils]: At program point L22-2(line 22) the Hoare annotation is: true [2021-02-24 04:47:40,259 INFO L192 CegarLoopUtils]: At program point L21-2(line 21) the Hoare annotation is: true [2021-02-24 04:47:40,259 INFO L192 CegarLoopUtils]: At program point L22-3(line 22) the Hoare annotation is: true [2021-02-24 04:47:40,259 INFO L192 CegarLoopUtils]: At program point L23-4(lines 18 25) the Hoare annotation is: true [2021-02-24 04:47:40,259 INFO L192 CegarLoopUtils]: At program point L21-3(line 21) the Hoare annotation is: true [2021-02-24 04:47:40,259 INFO L192 CegarLoopUtils]: At program point L22-5(lines 19 25) the Hoare annotation is: true [2021-02-24 04:47:40,259 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:47:40,260 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:47:40,260 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:47:40,260 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:47:40,260 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2021-02-24 04:47:40,260 INFO L189 CegarLoopUtils]: For program point L6(line 6) no Hoare annotation was computed. [2021-02-24 04:47:40,260 INFO L189 CegarLoopUtils]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-02-24 04:47:40,260 INFO L189 CegarLoopUtils]: For program point L6-3(lines 5 7) no Hoare annotation was computed. [2021-02-24 04:47:40,261 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2021-02-24 04:47:40,261 INFO L192 CegarLoopUtils]: At program point L35-2(line 35) the Hoare annotation is: true [2021-02-24 04:47:40,261 INFO L192 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: true [2021-02-24 04:47:40,261 INFO L192 CegarLoopUtils]: At program point L31-1(line 31) the Hoare annotation is: true [2021-02-24 04:47:40,261 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 27 48) the Hoare annotation is: true [2021-02-24 04:47:40,261 INFO L192 CegarLoopUtils]: At program point L44(line 44) the Hoare annotation is: true [2021-02-24 04:47:40,262 INFO L192 CegarLoopUtils]: At program point L40(line 40) the Hoare annotation is: true [2021-02-24 04:47:40,262 INFO L192 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: true [2021-02-24 04:47:40,262 INFO L192 CegarLoopUtils]: At program point L32-1(line 32) the Hoare annotation is: true [2021-02-24 04:47:40,262 INFO L192 CegarLoopUtils]: At program point L32-2(line 32) the Hoare annotation is: true [2021-02-24 04:47:40,262 INFO L192 CegarLoopUtils]: At program point L32-3(line 32) the Hoare annotation is: true [2021-02-24 04:47:40,262 INFO L192 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: true [2021-02-24 04:47:40,263 INFO L192 CegarLoopUtils]: At program point L37-1(line 37) the Hoare annotation is: true [2021-02-24 04:47:40,263 INFO L192 CegarLoopUtils]: At program point L37-2(line 37) the Hoare annotation is: true [2021-02-24 04:47:40,263 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 27 48) the Hoare annotation is: true [2021-02-24 04:47:40,263 INFO L192 CegarLoopUtils]: At program point L42-1(lines 28 48) the Hoare annotation is: true [2021-02-24 04:47:40,263 INFO L185 CegarLoopUtils]: At program point L42-2(lines 42 45) the Hoare annotation is: (<= main_~x~0 0) [2021-02-24 04:47:40,263 INFO L192 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: true [2021-02-24 04:47:40,263 INFO L192 CegarLoopUtils]: At program point L34-1(line 34) the Hoare annotation is: true [2021-02-24 04:47:40,264 INFO L192 CegarLoopUtils]: At program point L34-3(lines 28 48) the Hoare annotation is: true [2021-02-24 04:47:40,264 INFO L192 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: true [2021-02-24 04:47:40,264 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 27 48) the Hoare annotation is: true [2021-02-24 04:47:40,264 INFO L192 CegarLoopUtils]: At program point L30-1(line 30) the Hoare annotation is: true [2021-02-24 04:47:40,264 INFO L192 CegarLoopUtils]: At program point L30-2(line 30) the Hoare annotation is: true [2021-02-24 04:47:40,264 INFO L192 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: true [2021-02-24 04:47:40,264 INFO L192 CegarLoopUtils]: At program point L39-1(line 39) the Hoare annotation is: true [2021-02-24 04:47:40,265 INFO L192 CegarLoopUtils]: At program point L39-3(lines 28 48) the Hoare annotation is: true [2021-02-24 04:47:40,265 INFO L192 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: true [2021-02-24 04:47:40,265 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 9 14) the Hoare annotation is: true [2021-02-24 04:47:40,265 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:47:40,265 INFO L185 CegarLoopUtils]: At program point L10(lines 10 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 04:47:40,265 INFO L185 CegarLoopUtils]: At program point L11-1(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:47:40,266 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 9 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 04:47:40,266 INFO L185 CegarLoopUtils]: At program point L10-2(lines 9 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 04:47:40,266 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:47:40,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:47:40 BoogieIcfgContainer [2021-02-24 04:47:40,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:47:40,286 INFO L168 Benchmark]: Toolchain (without parser) took 2662.72 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 148.3 MB in the beginning and 142.2 MB in the end (delta: 6.1 MB). Peak memory consumption was 92.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:40,287 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 172.0 MB. Free memory was 145.3 MB in the beginning and 145.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:47:40,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.97 ms. Allocated memory is still 172.0 MB. Free memory was 147.3 MB in the beginning and 137.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:40,288 INFO L168 Benchmark]: Boogie Preprocessor took 63.58 ms. Allocated memory is still 172.0 MB. Free memory was 137.6 MB in the beginning and 135.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:40,289 INFO L168 Benchmark]: RCFGBuilder took 555.32 ms. Allocated memory is still 172.0 MB. Free memory was 135.9 MB in the beginning and 117.5 MB in the end (delta: 18.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:40,290 INFO L168 Benchmark]: TraceAbstraction took 1651.16 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 117.1 MB in the beginning and 142.2 MB in the end (delta: -25.2 MB). Peak memory consumption was 61.3 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:40,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 172.0 MB. Free memory was 145.3 MB in the beginning and 145.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 366.97 ms. Allocated memory is still 172.0 MB. Free memory was 147.3 MB in the beginning and 137.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.58 ms. Allocated memory is still 172.0 MB. Free memory was 137.6 MB in the beginning and 135.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 555.32 ms. Allocated memory is still 172.0 MB. Free memory was 135.9 MB in the beginning and 117.5 MB in the end (delta: 18.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1651.16 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 117.1 MB in the beginning and 142.2 MB in the end (delta: -25.2 MB). Peak memory consumption was 61.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: 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 - ProcedureContractResult [Line: 18]: Procedure Contract for foo Derived contract for procedure foo: 1 - ProcedureContractResult [Line: 27]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 55 SDslu, 57 SDs, 0 SdLazy, 164 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=64occurred 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, 64 LocationsWithAnnotation, 87 PreInvPairs, 96 NumberOfFragments, 123 HoareAnnotationTreeSize, 87 FomulaSimplifications, 70 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 64 FomulaSimplificationsInter, 1434 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...