/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/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:21:57,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:21:57,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:21:57,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:21:57,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:21:57,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:21:57,138 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:21:57,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:21:57,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:21:57,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:21:57,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:21:57,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:21:57,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:21:57,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:21:57,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:21:57,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:21:57,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:21:57,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:21:57,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:21:57,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:21:57,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:21:57,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:21:57,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:21:57,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:21:57,234 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:21:57,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:21:57,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:21:57,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:21:57,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:21:57,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:21:57,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:21:57,236 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:21:57,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:21:57,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:21:57,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:21:57,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:21:57,239 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:21:57,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:21:57,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:21:57,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:21:57,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:21:57,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:21:57,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:21:57,241 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:21:57,241 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:21:57,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:21:57,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:21:57,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:21:57,755 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:21:57,756 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:21:57,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2021-02-22 02:21:57,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc8eff281/ace1c8c33b0e4a248e0618ede89c4e97/FLAG6fa72df81 [2021-02-22 02:21:58,621 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:21:58,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2021-02-22 02:21:58,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc8eff281/ace1c8c33b0e4a248e0618ede89c4e97/FLAG6fa72df81 [2021-02-22 02:21:58,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc8eff281/ace1c8c33b0e4a248e0618ede89c4e97 [2021-02-22 02:21:58,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:21:58,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:21:58,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:58,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:21:58,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:21:58,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:58" (1/1) ... [2021-02-22 02:21:58,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f1d27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:58, skipping insertion in model container [2021-02-22 02:21:58,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:58" (1/1) ... [2021-02-22 02:21:58,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:21:58,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:21:59,224 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-invgen/NetBSD_loop.i[893,906] [2021-02-22 02:21:59,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:59,251 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:21:59,267 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-invgen/NetBSD_loop.i[893,906] [2021-02-22 02:21:59,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:59,292 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:21:59,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:59 WrapperNode [2021-02-22 02:21:59,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:59,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:21:59,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:21:59,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:21:59,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:59" (1/1) ... [2021-02-22 02:21:59,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:59" (1/1) ... [2021-02-22 02:21:59,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:59" (1/1) ... [2021-02-22 02:21:59,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:59" (1/1) ... [2021-02-22 02:21:59,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:59" (1/1) ... [2021-02-22 02:21:59,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:59" (1/1) ... [2021-02-22 02:21:59,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:59" (1/1) ... [2021-02-22 02:21:59,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:21:59,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:21:59,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:21:59,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:21:59,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:21:59,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:21:59,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:21:59,463 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:21:59,464 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:21:59,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:21:59,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:21:59,464 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:21:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:21:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:21:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:21:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:21:59,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:21:59,466 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:21:59,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:21:59,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:21:59,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:21:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:21:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:21:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:21:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:21:59,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:21:59,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:21:59,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:21:59,848 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-22 02:21:59,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:59 BoogieIcfgContainer [2021-02-22 02:21:59,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:21:59,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:21:59,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:21:59,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:21:59,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:21:58" (1/3) ... [2021-02-22 02:21:59,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c97372e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:59, skipping insertion in model container [2021-02-22 02:21:59,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:59" (2/3) ... [2021-02-22 02:21:59,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c97372e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:59, skipping insertion in model container [2021-02-22 02:21:59,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:59" (3/3) ... [2021-02-22 02:21:59,874 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2021-02-22 02:21:59,883 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:21:59,888 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:21:59,910 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:21:59,937 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:21:59,938 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:21:59,938 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:21:59,938 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:21:59,938 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:21:59,938 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:21:59,939 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:21:59,939 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:21:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-02-22 02:21:59,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-22 02:21:59,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:59,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:21:59,970 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:59,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:59,977 INFO L82 PathProgramCache]: Analyzing trace with hash -285804897, now seen corresponding path program 1 times [2021-02-22 02:21:59,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:59,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49780803] [2021-02-22 02:21:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:22:00,069 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:22:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:22:00,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:00,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:22:00,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:00,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:22:00,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:00,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:22:00,288 WARN L141 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-02-22 02:22:00,289 WARN L147 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size 3 [2021-02-22 02:22:00,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:00,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:22:00,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:00,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:22:00,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:00,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:22:00,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:22:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:22:00,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:00,398 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:22:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:22:00,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49780803] [2021-02-22 02:22:00,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:22:00,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 02:22:00,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125192013] [2021-02-22 02:22:00,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 02:22:00,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:22:00,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 02:22:00,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-22 02:22:00,440 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 8 states. [2021-02-22 02:22:01,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:22:01,093 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2021-02-22 02:22:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 02:22:01,095 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-02-22 02:22:01,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:22:01,105 INFO L225 Difference]: With dead ends: 76 [2021-02-22 02:22:01,106 INFO L226 Difference]: Without dead ends: 47 [2021-02-22 02:22:01,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-02-22 02:22:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-22 02:22:01,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-02-22 02:22:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-22 02:22:01,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-02-22 02:22:01,170 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 31 [2021-02-22 02:22:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:22:01,171 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-02-22 02:22:01,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 02:22:01,171 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-02-22 02:22:01,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-22 02:22:01,172 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:22:01,173 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:22:01,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:22:01,173 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:22:01,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:22:01,174 INFO L82 PathProgramCache]: Analyzing trace with hash 511937126, now seen corresponding path program 1 times [2021-02-22 02:22:01,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:22:01,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024432367] [2021-02-22 02:22:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:22:01,179 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:22:01,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:22:01,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:22:01,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:22:01,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:22:01,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:22:01,296 WARN L141 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-02-22 02:22:01,297 WARN L147 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size 13 [2021-02-22 02:22:01,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:22:01,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:22:01,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:22:01,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:22:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:22:01,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:22:01,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-22 02:22:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:22:01,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:22:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:22:01,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024432367] [2021-02-22 02:22:01,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:22:01,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 02:22:01,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500408550] [2021-02-22 02:22:01,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 02:22:01,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:22:01,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 02:22:01,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:22:01,395 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 9 states. [2021-02-22 02:22:01,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:22:01,836 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2021-02-22 02:22:01,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 02:22:01,837 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2021-02-22 02:22:01,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:22:01,839 INFO L225 Difference]: With dead ends: 53 [2021-02-22 02:22:01,840 INFO L226 Difference]: Without dead ends: 51 [2021-02-22 02:22:01,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-02-22 02:22:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-22 02:22:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-02-22 02:22:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-22 02:22:01,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-02-22 02:22:01,860 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 36 [2021-02-22 02:22:01,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:22:01,860 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-02-22 02:22:01,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 02:22:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-02-22 02:22:01,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-22 02:22:01,863 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:22:01,863 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:22:01,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:22:01,863 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:22:01,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:22:01,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1259828606, now seen corresponding path program 1 times [2021-02-22 02:22:01,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:22:01,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833083543] [2021-02-22 02:22:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:22:01,899 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:22:01,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:22:01,941 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-22 02:22:01,959 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:22:01,965 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:01,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:01,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-22 02:22:01,981 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-22 02:22:01,988 WARN L141 QuantifierPusher]: treesize reduction 11, result has 78.8 percent of original size [2021-02-22 02:22:01,992 WARN L147 QuantifierPusher]: treesize reduction 11, result has 78.8 percent of original size 41 [2021-02-22 02:22:01,994 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:22:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:22:02,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:22:02,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:22:02,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:22:02,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:22:02,091 WARN L141 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-02-22 02:22:02,092 WARN L147 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size 3 [2021-02-22 02:22:02,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:22:02,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:22:02,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:22:02,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:22:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:22:02,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:22:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:22:02,185 WARN L141 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size [2021-02-22 02:22:02,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:22:02,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:22:02,193 WARN L147 QuantifierPusher]: treesize reduction 7, result has 80.6 percent of original size 29 [2021-02-22 02:22:02,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:22:02,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:22:02,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-22 02:22:02,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:22:02,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-22 02:22:02,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:22:02,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-22 02:22:02,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,359 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:22:02,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-22 02:22:02,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:22:02,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-22 02:22:02,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-22 02:22:02,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-22 02:22:02,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 02:22:02,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:22:02,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 02:22:02,453 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:22:02,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 02:22:02,487 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:22:02,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,529 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 02:22:02,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:22:02,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 02:22:02,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 02:22:02,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:02,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:22:02,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-22 02:22:02,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:22:02,648 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:22:02,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:22:02,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:02,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:22:02,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833083543] [2021-02-22 02:22:02,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:22:02,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-02-22 02:22:02,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102388656] [2021-02-22 02:22:02,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-22 02:22:02,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:22:02,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-22 02:22:02,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-02-22 02:22:02,705 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 18 states. [2021-02-22 02:22:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:22:03,600 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-02-22 02:22:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-22 02:22:03,601 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2021-02-22 02:22:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:22:03,606 INFO L225 Difference]: With dead ends: 55 [2021-02-22 02:22:03,606 INFO L226 Difference]: Without dead ends: 53 [2021-02-22 02:22:03,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=200, Invalid=922, Unknown=0, NotChecked=0, Total=1122 [2021-02-22 02:22:03,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-22 02:22:03,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-02-22 02:22:03,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-02-22 02:22:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-02-22 02:22:03,653 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 45 [2021-02-22 02:22:03,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:22:03,654 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-02-22 02:22:03,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-22 02:22:03,654 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-02-22 02:22:03,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-22 02:22:03,658 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:22:03,659 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:22:03,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:22:03,659 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:22:03,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:22:03,664 INFO L82 PathProgramCache]: Analyzing trace with hash -712343833, now seen corresponding path program 2 times [2021-02-22 02:22:03,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:22:03,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512437914] [2021-02-22 02:22:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:22:03,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:03,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:22:03,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:03,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:22:03,704 WARN L141 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-02-22 02:22:03,706 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:22:03,709 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:03,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:22:03,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:22:03,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-22 02:22:03,721 WARN L147 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size 24 [2021-02-22 02:22:03,724 WARN L141 QuantifierPusher]: treesize reduction 11, result has 78.8 percent of original size [2021-02-22 02:22:03,727 WARN L147 QuantifierPusher]: treesize reduction 11, result has 78.8 percent of original size 41 [2021-02-22 02:22:03,728 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:22:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:22:03,747 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:22:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:22:03,766 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:22:03,808 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:22:03,808 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:22:03,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 02:22:03,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:22:03 BoogieIcfgContainer [2021-02-22 02:22:03,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:22:03,828 INFO L168 Benchmark]: Toolchain (without parser) took 4889.30 ms. Allocated memory was 155.2 MB in the beginning and 192.9 MB in the end (delta: 37.7 MB). Free memory was 131.5 MB in the beginning and 173.0 MB in the end (delta: -41.5 MB). Peak memory consumption was 105.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:22:03,829 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 155.2 MB. Free memory was 128.8 MB in the beginning and 128.7 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:22:03,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.18 ms. Allocated memory is still 155.2 MB. Free memory was 130.5 MB in the beginning and 120.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:22:03,830 INFO L168 Benchmark]: Boogie Preprocessor took 42.58 ms. Allocated memory is still 155.2 MB. Free memory was 120.8 MB in the beginning and 119.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:22:03,831 INFO L168 Benchmark]: RCFGBuilder took 509.45 ms. Allocated memory is still 155.2 MB. Free memory was 119.4 MB in the beginning and 136.2 MB in the end (delta: -16.8 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:22:03,832 INFO L168 Benchmark]: TraceAbstraction took 3971.28 ms. Allocated memory was 155.2 MB in the beginning and 192.9 MB in the end (delta: 37.7 MB). Free memory was 135.6 MB in the beginning and 173.0 MB in the end (delta: -37.4 MB). Peak memory consumption was 108.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:22:03,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 155.2 MB. Free memory was 128.8 MB in the beginning and 128.7 MB in the end (delta: 74.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 339.18 ms. Allocated memory is still 155.2 MB. Free memory was 130.5 MB in the beginning and 120.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.58 ms. Allocated memory is still 155.2 MB. Free memory was 120.8 MB in the beginning and 119.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 509.45 ms. Allocated memory is still 155.2 MB. Free memory was 119.4 MB in the beginning and 136.2 MB in the end (delta: -16.8 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3971.28 ms. Allocated memory was 155.2 MB in the beginning and 192.9 MB in the end (delta: 37.7 MB). Free memory was 135.6 MB in the beginning and 173.0 MB in the end (delta: -37.4 MB). Peak memory consumption was 108.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] int MAXPATHLEN; [L27] int pathbuf_off; [L28] int bound_off; [L29] int glob2_p_off; [L30] int glob2_pathbuf_off; [L31] int glob2_pathlim_off; [L32] MAXPATHLEN = __VERIFIER_nondet_int() [L33] COND TRUE MAXPATHLEN > 0 && MAXPATHLEN < 2147483647 [L34] pathbuf_off = 0 [L35] bound_off = pathbuf_off + (MAXPATHLEN + 1) - 1 [L36] glob2_pathbuf_off = pathbuf_off [L37] glob2_pathlim_off = bound_off [L38] glob2_p_off = glob2_pathbuf_off [L39] COND TRUE glob2_p_off <= glob2_pathlim_off [L41] CALL __VERIFIER_assert (0 <= glob2_p_off ) [L18] COND FALSE !(!(cond)) [L41] RET __VERIFIER_assert (0 <= glob2_p_off ) [L42] CALL __VERIFIER_assert (glob2_p_off < MAXPATHLEN + 1) [L18] COND FALSE !(!(cond)) [L42] RET __VERIFIER_assert (glob2_p_off < MAXPATHLEN + 1) [L40] glob2_p_off++ [L39] COND TRUE glob2_p_off <= glob2_pathlim_off [L41] CALL __VERIFIER_assert (0 <= glob2_p_off ) [L18] COND FALSE !(!(cond)) [L41] RET __VERIFIER_assert (0 <= glob2_p_off ) [L42] CALL __VERIFIER_assert (glob2_p_off < MAXPATHLEN + 1) [L18] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.8s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 101 SDtfs, 197 SDslu, 276 SDs, 0 SdLazy, 551 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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 incorrect! Received shutdown request...