/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:19:52,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:19:52,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:19:52,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:19:52,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:19:52,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:19:52,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:19:52,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:19:52,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:19:52,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:19:52,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:19:52,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:19:52,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:19:52,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:19:52,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:19:52,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:19:52,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:19:52,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:19:52,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:19:52,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:19:52,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:19:52,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:19:52,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:19:52,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:19:52,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 21:19:52,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 21:19:52,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 21:19:52,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 21:19:52,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 21:19:52,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 21:19:52,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 21:19:52,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 21:19:52,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 21:19:52,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 21:19:52,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 21:19:52,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 21:19:52,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 21:19:52,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 21:19:52,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:19:52,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:19:52,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:19:52,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:19:52,488 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:19:52,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:19:52,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:19:52,491 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:19:52,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:19:52,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:19:52,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:19:52,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:19:52,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:19:52,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:19:52,492 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:19:52,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:19:52,493 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:19:52,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:19:52,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:19:52,493 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:19:52,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:19:52,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:19:52,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:19:52,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:19:52,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:19:52,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:19:52,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:19:52,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:19:52,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:19:52,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:19:52,906 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:19:52,907 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:19:52,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2021-02-21 21:19:52,990 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af6014eb/0605d0249be94c7ebb2dd83d940c6f3b/FLAGdb36fa821 [2021-02-21 21:19:53,601 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:19:53,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2021-02-21 21:19:53,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af6014eb/0605d0249be94c7ebb2dd83d940c6f3b/FLAGdb36fa821 [2021-02-21 21:19:53,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af6014eb/0605d0249be94c7ebb2dd83d940c6f3b [2021-02-21 21:19:53,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:19:54,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:19:54,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:19:54,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:19:54,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:19:54,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:19:53" (1/1) ... [2021-02-21 21:19:54,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68aeaa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:19:54, skipping insertion in model container [2021-02-21 21:19:54,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:19:53" (1/1) ... [2021-02-21 21:19:54,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:19:54,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:19:54,176 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c[584,597] [2021-02-21 21:19:54,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:19:54,197 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:19:54,211 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c[584,597] [2021-02-21 21:19:54,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:19:54,231 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:19:54,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:19:54 WrapperNode [2021-02-21 21:19:54,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:19:54,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:19:54,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:19:54,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:19:54,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:19:54" (1/1) ... [2021-02-21 21:19:54,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:19:54" (1/1) ... [2021-02-21 21:19:54,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:19:54" (1/1) ... [2021-02-21 21:19:54,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:19:54" (1/1) ... [2021-02-21 21:19:54,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:19:54" (1/1) ... [2021-02-21 21:19:54,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:19:54" (1/1) ... [2021-02-21 21:19:54,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:19:54" (1/1) ... [2021-02-21 21:19:54,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:19:54,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:19:54,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:19:54,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:19:54,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:19:54" (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 [2021-02-21 21:19:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:19:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:19:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:19:54,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:19:54,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:19:54,386 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:19:54,386 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:19:54,387 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:19:54,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:19:54,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:19:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:19:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:19:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:19:54,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:19:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:19:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:19:54,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:19:54,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:19:54,816 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:19:54,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:19:54 BoogieIcfgContainer [2021-02-21 21:19:54,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:19:54,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:19:54,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:19:54,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:19:54,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:19:53" (1/3) ... [2021-02-21 21:19:54,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c9ba29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:19:54, skipping insertion in model container [2021-02-21 21:19:54,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:19:54" (2/3) ... [2021-02-21 21:19:54,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c9ba29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:19:54, skipping insertion in model container [2021-02-21 21:19:54,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:19:54" (3/3) ... [2021-02-21 21:19:54,828 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2021-02-21 21:19:54,836 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:19:54,841 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:19:54,863 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:19:54,889 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:19:54,889 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:19:54,889 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:19:54,889 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:19:54,889 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:19:54,889 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:19:54,890 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:19:54,890 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:19:54,909 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-02-21 21:19:54,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 21:19:54,925 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:19:54,926 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] [2021-02-21 21:19:54,928 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:19:54,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:19:54,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1490799159, now seen corresponding path program 1 times [2021-02-21 21:19:54,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:19:54,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130347238] [2021-02-21 21:19:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:19:55,047 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:19:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:19:55,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:19:55,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:19:55,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:19:55,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:19:55,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:19:55,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:19:55,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:19:55,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:19:55,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:19:55,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:19:55,635 WARN L141 QuantifierPusher]: treesize reduction 23, result has 83.6 percent of original size [2021-02-21 21:19:55,644 WARN L147 QuantifierPusher]: treesize reduction 23, result has 83.6 percent of original size 117 [2021-02-21 21:19:55,763 WARN L141 QuantifierPusher]: treesize reduction 46, result has 82.4 percent of original size [2021-02-21 21:19:55,772 WARN L147 QuantifierPusher]: treesize reduction 46, result has 82.4 percent of original size 215 [2021-02-21 21:19:55,941 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2021-02-21 21:19:55,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:19:55,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:19:55,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:19:55,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:19:55,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:19:55,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:19:56,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:19:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:19:56,023 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:19:56,023 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:19:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:19:56,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130347238] [2021-02-21 21:19:56,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:19:56,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-21 21:19:56,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290651789] [2021-02-21 21:19:56,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-21 21:19:56,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:19:56,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-21 21:19:56,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:19:56,058 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 11 states. [2021-02-21 21:19:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:19:56,710 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2021-02-21 21:19:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 21:19:56,712 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2021-02-21 21:19:56,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:19:56,720 INFO L225 Difference]: With dead ends: 59 [2021-02-21 21:19:56,720 INFO L226 Difference]: Without dead ends: 37 [2021-02-21 21:19:56,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-02-21 21:19:56,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-21 21:19:56,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-02-21 21:19:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-21 21:19:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-02-21 21:19:56,773 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2021-02-21 21:19:56,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:19:56,774 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-02-21 21:19:56,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-21 21:19:56,774 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-02-21 21:19:56,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-21 21:19:56,776 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:19:56,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:19:56,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:19:56,777 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:19:56,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:19:56,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1740881698, now seen corresponding path program 1 times [2021-02-21 21:19:56,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:19:56,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884673387] [2021-02-21 21:19:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:20:11,115 WARN L202 SmtUtils]: Spent 14.29 s on a formula simplification. DAG size of input: 1824 DAG size of output: 374 [2021-02-21 21:20:11,137 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:20:11,140 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:20:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:20:11,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:20:11,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:20:11,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:20:11,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:20:11,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:20:11,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 21:20:11,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 21:20:11,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-21 21:20:11,351 WARN L141 QuantifierPusher]: treesize reduction 23, result has 84.1 percent of original size [2021-02-21 21:20:11,358 WARN L147 QuantifierPusher]: treesize reduction 23, result has 84.1 percent of original size 122 [2021-02-21 21:20:11,451 WARN L141 QuantifierPusher]: treesize reduction 46, result has 82.4 percent of original size [2021-02-21 21:20:11,459 WARN L147 QuantifierPusher]: treesize reduction 46, result has 82.4 percent of original size 215 [2021-02-21 21:20:11,620 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2021-02-21 21:20:11,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:20:11,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:20:11,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:20:11,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:20:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:20:11,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:20:11,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 21:20:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:20:11,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:11,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:20:11,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:20:11,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884673387] [2021-02-21 21:20:11,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:20:11,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 21:20:11,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548186652] [2021-02-21 21:20:11,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 21:20:11,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:20:11,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 21:20:11,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-02-21 21:20:11,735 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 14 states. [2021-02-21 21:20:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:20:12,521 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-02-21 21:20:12,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 21:20:12,522 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2021-02-21 21:20:12,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:20:12,527 INFO L225 Difference]: With dead ends: 48 [2021-02-21 21:20:12,527 INFO L226 Difference]: Without dead ends: 46 [2021-02-21 21:20:12,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-02-21 21:20:12,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-21 21:20:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2021-02-21 21:20:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-21 21:20:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-02-21 21:20:12,558 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 32 [2021-02-21 21:20:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:20:12,559 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-02-21 21:20:12,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 21:20:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-02-21 21:20:12,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-21 21:20:12,561 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:20:12,561 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:20:12,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:20:12,561 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:20:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:20:12,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1811489431, now seen corresponding path program 2 times [2021-02-21 21:20:12,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:20:12,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306938821] [2021-02-21 21:20:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:20:23,286 WARN L202 SmtUtils]: Spent 10.69 s on a formula simplification. DAG size of input: 1824 DAG size of output: 389 [2021-02-21 21:20:23,294 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:20:23,296 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:20:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:20:23,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:20:23,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:20:23,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,404 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:20:23,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 21:20:23,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:20:23,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 21:20:23,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 21:20:23,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,467 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-21 21:20:23,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-21 21:20:23,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 21:20:23,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-21 21:20:23,512 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.2 percent of original size [2021-02-21 21:20:23,515 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.2 percent of original size 141 [2021-02-21 21:20:23,593 WARN L141 QuantifierPusher]: treesize reduction 27, result has 89.7 percent of original size [2021-02-21 21:20:23,597 WARN L147 QuantifierPusher]: treesize reduction 27, result has 89.7 percent of original size 234 [2021-02-21 21:20:23,743 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2021-02-21 21:20:23,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:20:23,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:20:23,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:20:23,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:20:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:20:23,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:20:23,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-21 21:20:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:20:23,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:20:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 21:20:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:20:23,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:20:23,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:20:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:20:23,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306938821] [2021-02-21 21:20:23,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:20:23,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 21:20:23,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274133497] [2021-02-21 21:20:23,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 21:20:23,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:20:23,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 21:20:23,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-02-21 21:20:23,847 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 15 states. [2021-02-21 21:20:24,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:20:24,419 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-02-21 21:20:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-21 21:20:24,425 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2021-02-21 21:20:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:20:24,426 INFO L225 Difference]: With dead ends: 44 [2021-02-21 21:20:24,426 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:20:24,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-02-21 21:20:24,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:20:24,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:20:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:20:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:20:24,428 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2021-02-21 21:20:24,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:20:24,429 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:20:24,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 21:20:24,429 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:20:24,429 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:20:24,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:20:24,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:20:25,033 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 6) no Hoare annotation was computed. [2021-02-21 21:20:25,033 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 6) no Hoare annotation was computed. [2021-02-21 21:20:25,034 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 6) no Hoare annotation was computed. [2021-02-21 21:20:25,034 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:20:25,035 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:20:25,035 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 6) the Hoare annotation is: true [2021-02-21 21:20:25,035 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|)) [2021-02-21 21:20:25,035 INFO L192 CegarLoopUtils]: At program point L6(line 6) the Hoare annotation is: true [2021-02-21 21:20:25,035 INFO L192 CegarLoopUtils]: At program point L6-1(line 6) the Hoare annotation is: true [2021-02-21 21:20:25,036 INFO L192 CegarLoopUtils]: At program point L6-2(line 6) the Hoare annotation is: true [2021-02-21 21:20:25,036 INFO L192 CegarLoopUtils]: At program point L6-3(line 6) the Hoare annotation is: true [2021-02-21 21:20:25,036 INFO L192 CegarLoopUtils]: At program point L6-4(line 6) the Hoare annotation is: true [2021-02-21 21:20:25,036 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:20:25,036 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:20:25,036 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:20:25,036 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:20:25,036 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:20:25,037 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 15 28) the Hoare annotation is: true [2021-02-21 21:20:25,037 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1))) [2021-02-21 21:20:25,037 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 15 28) the Hoare annotation is: true [2021-02-21 21:20:25,037 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~k~0 3)) (.cse2 (* 2 main_~i~0))) (and (<= .cse0 .cse1) (<= .cse2 main_~j~0) (<= .cse1 .cse0) (<= main_~j~0 .cse2))) [2021-02-21 21:20:25,038 INFO L185 CegarLoopUtils]: At program point L25-1(lines 21 26) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1))) [2021-02-21 21:20:25,038 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~k~0 3)) (.cse3 (* 2 main_~i~0)) (.cse2 (+ main_~j~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse2 .cse3) (<= .cse3 .cse2))) [2021-02-21 21:20:25,038 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1))) [2021-02-21 21:20:25,038 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (and (= main_~i~0 0) (= main_~j~0 0)) [2021-02-21 21:20:25,038 INFO L192 CegarLoopUtils]: At program point L21-2(lines 15 28) the Hoare annotation is: true [2021-02-21 21:20:25,039 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (= main_~i~0 0) [2021-02-21 21:20:25,039 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 7 13) the Hoare annotation is: true [2021-02-21 21:20:25,039 INFO L185 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:20:25,039 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 7 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:20:25,039 INFO L185 CegarLoopUtils]: At program point L9(lines 9 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:20:25,039 INFO L185 CegarLoopUtils]: At program point L10-1(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:20:25,039 INFO L185 CegarLoopUtils]: At program point L9-2(lines 7 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:20:25,040 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:20:25,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:20:25 BoogieIcfgContainer [2021-02-21 21:20:25,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:20:25,081 INFO L168 Benchmark]: Toolchain (without parser) took 31091.68 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 133.6 MB in the beginning and 108.2 MB in the end (delta: 25.4 MB). Peak memory consumption was 95.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:20:25,081 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:20:25,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.01 ms. Allocated memory is still 157.3 MB. Free memory was 132.5 MB in the beginning and 123.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:20:25,083 INFO L168 Benchmark]: Boogie Preprocessor took 34.57 ms. Allocated memory is still 157.3 MB. Free memory was 123.1 MB in the beginning and 121.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:20:25,088 INFO L168 Benchmark]: RCFGBuilder took 549.73 ms. Allocated memory is still 157.3 MB. Free memory was 121.9 MB in the beginning and 107.7 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:20:25,092 INFO L168 Benchmark]: TraceAbstraction took 30257.12 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 107.2 MB in the beginning and 108.2 MB in the end (delta: -968.4 kB). Peak memory consumption was 69.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:20:25,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 228.01 ms. Allocated memory is still 157.3 MB. Free memory was 132.5 MB in the beginning and 123.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.57 ms. Allocated memory is still 157.3 MB. Free memory was 123.1 MB in the beginning and 121.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 549.73 ms. Allocated memory is still 157.3 MB. Free memory was 121.9 MB in the beginning and 107.7 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 30257.12 ms. Allocated memory was 157.3 MB in the beginning and 226.5 MB in the end (delta: 69.2 MB). Free memory was 107.2 MB in the beginning and 108.2 MB in the end (delta: -968.4 kB). Peak memory consumption was 69.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 21]: Loop Invariant Derived loop invariant: ((2 * i <= j && j <= 2 * i) && 3 * i <= k) && k <= 3 * i - ProcedureContractResult [Line: 15]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 7]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.5s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 88 SDslu, 372 SDs, 0 SdLazy, 382 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=2, 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 52 PreInvPairs, 77 NumberOfFragments, 208 HoareAnnotationTreeSize, 52 FomulaSimplifications, 1856 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 31 FomulaSimplificationsInter, 671 FormulaSimplificationTreeSizeReductionInter, 0.3s 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...