/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/for_infinite_loop_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:47:06,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:47:06,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:47:06,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:47:06,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:47:06,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:47:06,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:47:06,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:47:06,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:47:06,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:47:06,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:47:06,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:47:06,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:47:06,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:47:06,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:47:06,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:47:06,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:47:06,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:47:06,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:47:06,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:47:06,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:47:06,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:47:06,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:47:06,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:47:06,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:47:06,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:47:06,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:47:06,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:47:06,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:47:06,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:47:06,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:47:06,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:47:06,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:47:06,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:47:06,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:47:06,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:47:06,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:47:06,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:47:06,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:47:06,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:47:06,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:47:06,510 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 04:47:06,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:47:06,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:47:06,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:47:06,533 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:47:06,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:47:06,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:47:06,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:47:06,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:47:06,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:47:06,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:47:06,534 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:47:06,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:47:06,535 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:47:06,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:47:06,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:47:06,535 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:47:06,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:47:06,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:47:06,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:47:06,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:47:06,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:47:06,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:47:06,537 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:47:06,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:47:06,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:47:07,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:47:07,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:47:07,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:47:07,019 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:47:07,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_infinite_loop_2.c [2021-02-24 04:47:07,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f6685ec/5a48c6dd19cf4e1aa1713955c43a48ca/FLAG384ce5a32 [2021-02-24 04:47:07,727 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:47:07,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_infinite_loop_2.c [2021-02-24 04:47:07,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f6685ec/5a48c6dd19cf4e1aa1713955c43a48ca/FLAG384ce5a32 [2021-02-24 04:47:08,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f6685ec/5a48c6dd19cf4e1aa1713955c43a48ca [2021-02-24 04:47:08,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:47:08,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:47:08,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:08,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:47:08,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:47:08,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:08" (1/1) ... [2021-02-24 04:47:08,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56bfb98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:08, skipping insertion in model container [2021-02-24 04:47:08,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:08" (1/1) ... [2021-02-24 04:47:08,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:47:08,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:47:08,296 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/for_infinite_loop_2.c[418,431] [2021-02-24 04:47:08,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:08,319 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:47:08,334 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/for_infinite_loop_2.c[418,431] [2021-02-24 04:47:08,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:08,355 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:47:08,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:08 WrapperNode [2021-02-24 04:47:08,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:08,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:47:08,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:47:08,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:47:08,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:08" (1/1) ... [2021-02-24 04:47:08,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:08" (1/1) ... [2021-02-24 04:47:08,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:08" (1/1) ... [2021-02-24 04:47:08,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:08" (1/1) ... [2021-02-24 04:47:08,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:08" (1/1) ... [2021-02-24 04:47:08,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:08" (1/1) ... [2021-02-24 04:47:08,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:08" (1/1) ... [2021-02-24 04:47:08,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:47:08,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:47:08,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:47:08,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:47:08,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:08" (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 04:47:08,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:47:08,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:47:08,515 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:47:08,515 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:47:08,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:47:08,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:47:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:47:08,516 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:47:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:47:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:47:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:47:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:47:08,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:47:08,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:47:08,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:47:08,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:47:08,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:47:08,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:47:08,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:47:08,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:47:08,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:47:08,897 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:47:08,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:08 BoogieIcfgContainer [2021-02-24 04:47:08,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:47:08,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:47:08,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:47:08,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:47:08,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:47:08" (1/3) ... [2021-02-24 04:47:08,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff94d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:08, skipping insertion in model container [2021-02-24 04:47:08,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:08" (2/3) ... [2021-02-24 04:47:08,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff94d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:08, skipping insertion in model container [2021-02-24 04:47:08,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:08" (3/3) ... [2021-02-24 04:47:08,909 INFO L111 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_2.c [2021-02-24 04:47:08,918 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:47:08,924 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:47:08,946 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:47:08,974 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:47:08,974 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:47:08,975 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:47:08,975 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:47:08,975 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:47:08,975 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:47:08,976 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:47:08,976 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:47:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2021-02-24 04:47:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-24 04:47:09,003 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:09,004 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] [2021-02-24 04:47:09,005 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:09,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:09,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1751332459, now seen corresponding path program 1 times [2021-02-24 04:47:09,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:09,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063568318] [2021-02-24 04:47:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:09,106 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:09,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:09,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:09,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:09,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:09,428 WARN L202 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-02-24 04:47:09,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:09,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:09,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:09,501 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 04:47:09,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063568318] [2021-02-24 04:47:09,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:09,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:47:09,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294212646] [2021-02-24 04:47:09,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:47:09,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:09,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:47:09,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:47:09,536 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2021-02-24 04:47:09,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:09,706 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2021-02-24 04:47:09,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:47:09,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-02-24 04:47:09,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:09,719 INFO L225 Difference]: With dead ends: 53 [2021-02-24 04:47:09,720 INFO L226 Difference]: Without dead ends: 31 [2021-02-24 04:47:09,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:47:09,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-24 04:47:09,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-02-24 04:47:09,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-24 04:47:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-02-24 04:47:09,800 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2021-02-24 04:47:09,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:09,801 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-02-24 04:47:09,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:47:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-02-24 04:47:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-24 04:47:09,803 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:09,804 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] [2021-02-24 04:47:09,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:47:09,805 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:09,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:09,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1744808230, now seen corresponding path program 1 times [2021-02-24 04:47:09,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:09,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069683744] [2021-02-24 04:47:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:09,825 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:09,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:09,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:09,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:09,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:09,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:09,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:09,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:09,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:10,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:10,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:10,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:10,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:10,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:10,111 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 04:47:10,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069683744] [2021-02-24 04:47:10,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:10,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:47:10,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687200347] [2021-02-24 04:47:10,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:47:10,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:10,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:47:10,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:47:10,116 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 6 states. [2021-02-24 04:47:10,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:10,398 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-02-24 04:47:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:47:10,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2021-02-24 04:47:10,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:10,400 INFO L225 Difference]: With dead ends: 31 [2021-02-24 04:47:10,400 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:47:10,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:47:10,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:47:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:47:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:47:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:47:10,405 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-02-24 04:47:10,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:10,406 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:47:10,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:47:10,406 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:47:10,406 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:47:10,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:47:10,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:47:10,809 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 04:47:10,810 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 04:47:10,810 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 04:47:10,810 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 04:47:10,811 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 04:47:10,811 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:47:10,811 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 04:47:10,812 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:47:10,812 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 04:47:10,812 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 04:47:10,812 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 04:47:10,812 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 04:47:10,812 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:47:10,813 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 04:47:10,813 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:47:10,813 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:47:10,813 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 04:47:10,813 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-02-24 04:47:10,814 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-02-24 04:47:10,814 INFO L189 CegarLoopUtils]: For program point L7-1(line 7) no Hoare annotation was computed. [2021-02-24 04:47:10,815 INFO L189 CegarLoopUtils]: For program point L7-3(lines 6 8) no Hoare annotation was computed. [2021-02-24 04:47:10,815 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-02-24 04:47:10,815 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 04:47:10,815 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 18 28) the Hoare annotation is: true [2021-02-24 04:47:10,815 INFO L185 CegarLoopUtils]: At program point L25-1(lines 23 26) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 04:47:10,816 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 04:47:10,816 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 04:47:10,816 INFO L185 CegarLoopUtils]: At program point L21-1(line 21) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 04:47:10,816 INFO L185 CegarLoopUtils]: At program point L23-3(line 23) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 04:47:10,817 INFO L185 CegarLoopUtils]: At program point L21-2(line 21) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 04:47:10,817 INFO L185 CegarLoopUtils]: At program point L23-4(line 23) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 04:47:10,817 INFO L185 CegarLoopUtils]: At program point L23-5(lines 23 26) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 04:47:10,817 INFO L185 CegarLoopUtils]: At program point L23-6(lines 23 26) the Hoare annotation is: false [2021-02-24 04:47:10,817 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 18 28) the Hoare annotation is: true [2021-02-24 04:47:10,818 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 18 28) the Hoare annotation is: true [2021-02-24 04:47:10,818 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 04:47:10,818 INFO L192 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: true [2021-02-24 04:47:10,818 INFO L192 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: true [2021-02-24 04:47:10,818 INFO L185 CegarLoopUtils]: At program point L20-1(line 20) the Hoare annotation is: (= main_~x~0 0) [2021-02-24 04:47:10,818 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 9 14) the Hoare annotation is: true [2021-02-24 04:47:10,819 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:47:10,819 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 04:47:10,819 INFO L185 CegarLoopUtils]: At program point L11-1(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:47:10,819 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 04:47:10,819 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 04:47:10,820 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 04:47:10,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:47:10 BoogieIcfgContainer [2021-02-24 04:47:10,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:47:10,845 INFO L168 Benchmark]: Toolchain (without parser) took 2738.13 ms. Allocated memory is still 162.5 MB. Free memory was 139.0 MB in the beginning and 73.5 MB in the end (delta: 65.5 MB). Peak memory consumption was 66.3 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:10,845 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 162.5 MB. Free memory is still 136.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:47:10,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.32 ms. Allocated memory is still 162.5 MB. Free memory was 137.8 MB in the beginning and 128.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:10,848 INFO L168 Benchmark]: Boogie Preprocessor took 38.58 ms. Allocated memory is still 162.5 MB. Free memory was 128.3 MB in the beginning and 127.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:10,849 INFO L168 Benchmark]: RCFGBuilder took 500.17 ms. Allocated memory is still 162.5 MB. Free memory was 127.0 MB in the beginning and 145.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:10,852 INFO L168 Benchmark]: TraceAbstraction took 1941.25 ms. Allocated memory is still 162.5 MB. Free memory was 144.6 MB in the beginning and 73.5 MB in the end (delta: 71.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:10,866 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 162.5 MB. Free memory is still 136.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 237.32 ms. Allocated memory is still 162.5 MB. Free memory was 137.8 MB in the beginning and 128.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.58 ms. Allocated memory is still 162.5 MB. Free memory was 128.3 MB in the beginning and 127.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 500.17 ms. Allocated memory is still 162.5 MB. Free memory was 127.0 MB in the beginning and 145.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1941.25 ms. Allocated memory is still 162.5 MB. Free memory was 144.6 MB in the beginning and 73.5 MB in the end (delta: 71.1 MB). Peak memory consumption was 71.1 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 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x == 0 - ProcedureContractResult [Line: 18]: 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 6 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 43 SDslu, 45 SDs, 0 SdLazy, 49 SolverSat, 6 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, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 38 LocationsWithAnnotation, 52 PreInvPairs, 63 NumberOfFragments, 117 HoareAnnotationTreeSize, 52 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 38 FomulaSimplificationsInter, 634 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...