/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:17:55,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:17:55,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:17:55,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 00:17:55,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 00:17:55,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 00:17:55,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 00:17:55,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 00:17:55,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 00:17:55,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 00:17:55,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 00:17:55,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 00:17:55,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:17:55,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:17:55,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:17:55,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:17:55,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:17:55,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:17:55,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:17:55,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:17:55,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:17:55,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:17:55,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:17:55,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:17:55,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 00:17:55,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 00:17:55,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 00:17:55,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 00:17:55,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 00:17:55,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 00:17:55,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 00:17:55,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 00:17:55,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 00:17:55,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 00:17:55,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 00:17:55,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 00:17:55,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 00:17:55,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 00:17:55,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:17:55,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:17:55,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:17:55,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:17:55,592 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:17:55,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:17:55,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:17:55,597 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:17:55,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:17:55,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:17:55,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:17:55,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:17:55,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:17:55,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:17:55,599 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:17:55,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:17:55,600 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:17:55,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:17:55,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:17:55,601 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:17:55,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:17:55,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:17:55,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:17:55,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:17:55,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:17:55,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:17:55,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:17:55,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:17:56,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:17:56,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:17:56,013 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:17:56,014 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:17:56,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2021-02-24 00:17:56,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c984e38e3/f96c255171444c93b9738ff3dcb5013f/FLAGfb612f85f [2021-02-24 00:17:56,751 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:17:56,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2021-02-24 00:17:56,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c984e38e3/f96c255171444c93b9738ff3dcb5013f/FLAGfb612f85f [2021-02-24 00:17:57,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c984e38e3/f96c255171444c93b9738ff3dcb5013f [2021-02-24 00:17:57,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:17:57,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:17:57,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:17:57,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:17:57,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:17:57,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:17:57" (1/1) ... [2021-02-24 00:17:57,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bdccdc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:57, skipping insertion in model container [2021-02-24 00:17:57,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:17:57" (1/1) ... [2021-02-24 00:17:57,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:17:57,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:17:57,390 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] [2021-02-24 00:17:57,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:17:57,419 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:17:57,438 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] [2021-02-24 00:17:57,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:17:57,469 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:17:57,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:57 WrapperNode [2021-02-24 00:17:57,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:17:57,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:17:57,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:17:57,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:17:57,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:57" (1/1) ... [2021-02-24 00:17:57,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:57" (1/1) ... [2021-02-24 00:17:57,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:57" (1/1) ... [2021-02-24 00:17:57,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:57" (1/1) ... [2021-02-24 00:17:57,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:57" (1/1) ... [2021-02-24 00:17:57,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:57" (1/1) ... [2021-02-24 00:17:57,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:57" (1/1) ... [2021-02-24 00:17:57,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:17:57,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:17:57,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:17:57,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:17:57,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:17:57,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:17:57,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:17:57,617 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:17:57,618 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:17:57,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:17:57,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:17:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:17:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:17:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 00:17:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 00:17:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:17:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:17:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:17:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:17:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:17:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:17:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:17:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:17:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:17:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:17:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:17:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:17:57,866 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:17:57,866 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:17:57,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:17:57 BoogieIcfgContainer [2021-02-24 00:17:57,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:17:57,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:17:57,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:17:57,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:17:57,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:17:57" (1/3) ... [2021-02-24 00:17:57,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4e0352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:17:57, skipping insertion in model container [2021-02-24 00:17:57,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:57" (2/3) ... [2021-02-24 00:17:57,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4e0352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:17:57, skipping insertion in model container [2021-02-24 00:17:57,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:17:57" (3/3) ... [2021-02-24 00:17:57,903 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2021-02-24 00:17:57,912 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:17:57,917 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:17:57,942 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:17:57,971 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:17:57,972 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:17:57,972 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:17:57,972 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:17:57,972 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:17:57,972 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:17:57,973 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:17:57,973 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:17:57,991 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-02-24 00:17:58,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 00:17:58,002 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:58,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:17:58,004 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:58,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:58,011 INFO L82 PathProgramCache]: Analyzing trace with hash -285804897, now seen corresponding path program 1 times [2021-02-24 00:17:58,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:58,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748079808] [2021-02-24 00:17:58,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:58,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:58,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:58,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:58,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:58,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:58,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:58,297 WARN L141 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size [2021-02-24 00:17:58,298 WARN L147 QuantifierPusher]: treesize reduction 9, result has 25.0 percent of original size 3 [2021-02-24 00:17:58,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:58,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:17:58,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:58,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:17:58,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:58,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:58,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:58,384 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:58,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:17:58,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748079808] [2021-02-24 00:17:58,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:17:58,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 00:17:58,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94200397] [2021-02-24 00:17:58,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 00:17:58,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:58,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 00:17:58,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-24 00:17:58,423 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 8 states. [2021-02-24 00:17:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:58,890 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2021-02-24 00:17:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:17:58,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-02-24 00:17:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:58,903 INFO L225 Difference]: With dead ends: 76 [2021-02-24 00:17:58,903 INFO L226 Difference]: Without dead ends: 47 [2021-02-24 00:17:58,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-02-24 00:17:58,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-24 00:17:58,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-02-24 00:17:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-24 00:17:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-02-24 00:17:58,967 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 31 [2021-02-24 00:17:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:58,968 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-02-24 00:17:58,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 00:17:58,969 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-02-24 00:17:58,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 00:17:58,970 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:58,971 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] [2021-02-24 00:17:58,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:17:58,972 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:58,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:58,973 INFO L82 PathProgramCache]: Analyzing trace with hash 511937126, now seen corresponding path program 1 times [2021-02-24 00:17:58,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:58,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020139430] [2021-02-24 00:17:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:59,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:59,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:59,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:59,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:17:59,088 WARN L141 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-02-24 00:17:59,090 WARN L147 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size 13 [2021-02-24 00:17:59,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:17:59,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:17:59,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:59,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:59,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:59,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-24 00:17:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:59,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:17:59,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020139430] [2021-02-24 00:17:59,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:17:59,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 00:17:59,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748463232] [2021-02-24 00:17:59,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:17:59,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:59,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:17:59,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:17:59,185 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 9 states. [2021-02-24 00:17:59,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:17:59,518 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2021-02-24 00:17:59,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:17:59,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2021-02-24 00:17:59,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:17:59,521 INFO L225 Difference]: With dead ends: 53 [2021-02-24 00:17:59,521 INFO L226 Difference]: Without dead ends: 51 [2021-02-24 00:17:59,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:17:59,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-24 00:17:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2021-02-24 00:17:59,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-24 00:17:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-02-24 00:17:59,539 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 36 [2021-02-24 00:17:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:17:59,540 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-02-24 00:17:59,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:17:59,540 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-02-24 00:17:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-24 00:17:59,542 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:17:59,542 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] [2021-02-24 00:17:59,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:17:59,543 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:17:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:17:59,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1259828606, now seen corresponding path program 1 times [2021-02-24 00:17:59,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:17:59,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103699354] [2021-02-24 00:17:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:17:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:59,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:59,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:59,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:59,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:59,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:59,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:17:59,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:17:59,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:17:59,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:59,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:17:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:59,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:59,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-24 00:17:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:59,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,737 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:59,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:17:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:17:59,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:17:59,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:17:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-24 00:17:59,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103699354] [2021-02-24 00:17:59,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:17:59,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:17:59,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950907766] [2021-02-24 00:17:59,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:17:59,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:17:59,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:17:59,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:17:59,768 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 10 states. [2021-02-24 00:18:00,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:18:00,224 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-02-24 00:18:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:18:00,225 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2021-02-24 00:18:00,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:18:00,227 INFO L225 Difference]: With dead ends: 63 [2021-02-24 00:18:00,227 INFO L226 Difference]: Without dead ends: 61 [2021-02-24 00:18:00,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:18:00,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-24 00:18:00,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2021-02-24 00:18:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-24 00:18:00,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2021-02-24 00:18:00,244 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 45 [2021-02-24 00:18:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:18:00,245 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2021-02-24 00:18:00,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:18:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2021-02-24 00:18:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-24 00:18:00,247 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:18:00,247 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] [2021-02-24 00:18:00,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:18:00,248 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:18:00,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:18:00,248 INFO L82 PathProgramCache]: Analyzing trace with hash -712343833, now seen corresponding path program 2 times [2021-02-24 00:18:00,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:18:00,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472940494] [2021-02-24 00:18:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:18:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:00,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:00,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:00,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:18:00,314 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:18:00,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:18:00,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:18:00,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,355 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:00,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:18:00,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:18:00,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:00,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:18:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:00,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:00,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-24 00:18:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:00,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:00,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:18:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:00,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:00,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-24 00:18:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:00,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:00,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-02-24 00:18:00,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472940494] [2021-02-24 00:18:00,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:18:00,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:18:00,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664002527] [2021-02-24 00:18:00,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:18:00,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:18:00,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:18:00,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:18:00,464 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 11 states. [2021-02-24 00:18:00,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:18:00,962 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-02-24 00:18:00,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 00:18:00,963 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2021-02-24 00:18:00,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:18:00,964 INFO L225 Difference]: With dead ends: 67 [2021-02-24 00:18:00,964 INFO L226 Difference]: Without dead ends: 65 [2021-02-24 00:18:00,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-02-24 00:18:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-24 00:18:00,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-02-24 00:18:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-24 00:18:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-02-24 00:18:00,981 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 50 [2021-02-24 00:18:00,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:18:00,982 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-02-24 00:18:00,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:18:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-02-24 00:18:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-02-24 00:18:00,983 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:18:00,984 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:18:00,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:18:00,984 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:18:00,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:18:00,985 INFO L82 PathProgramCache]: Analyzing trace with hash 866451997, now seen corresponding path program 3 times [2021-02-24 00:18:00,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:18:00,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193137459] [2021-02-24 00:18:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:18:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:01,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:01,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:01,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:01,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:01,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:01,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:01,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:01,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:18:01,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:18:01,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:18:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:01,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-24 00:18:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:01,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:18:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:01,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-24 00:18:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:01,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:18:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:01,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-02-24 00:18:01,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193137459] [2021-02-24 00:18:01,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:18:01,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:18:01,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415392524] [2021-02-24 00:18:01,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:18:01,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:18:01,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:18:01,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:18:01,185 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 12 states. [2021-02-24 00:18:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:18:01,795 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2021-02-24 00:18:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 00:18:01,795 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 59 [2021-02-24 00:18:01,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:18:01,797 INFO L225 Difference]: With dead ends: 71 [2021-02-24 00:18:01,797 INFO L226 Difference]: Without dead ends: 69 [2021-02-24 00:18:01,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2021-02-24 00:18:01,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-02-24 00:18:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2021-02-24 00:18:01,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-24 00:18:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2021-02-24 00:18:01,825 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 59 [2021-02-24 00:18:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:18:01,825 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2021-02-24 00:18:01,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:18:01,826 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2021-02-24 00:18:01,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-24 00:18:01,827 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:18:01,827 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 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] [2021-02-24 00:18:01,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:18:01,828 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:18:01,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:18:01,828 INFO L82 PathProgramCache]: Analyzing trace with hash 853999016, now seen corresponding path program 4 times [2021-02-24 00:18:01,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:18:01,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751275905] [2021-02-24 00:18:01,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:18:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:01,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,877 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:01,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:18:01,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:01,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:01,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:01,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:18:01,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:18:01,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:18:01,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:18:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:01,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-24 00:18:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:01,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-24 00:18:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:01,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-24 00:18:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:01,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-24 00:18:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:01,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:01,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:01,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-24 00:18:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:18:02,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:18:02,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:18:02,011 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-02-24 00:18:02,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751275905] [2021-02-24 00:18:02,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:18:02,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-02-24 00:18:02,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033392364] [2021-02-24 00:18:02,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-24 00:18:02,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:18:02,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-24 00:18:02,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-24 00:18:02,014 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 10 states. [2021-02-24 00:18:02,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:18:02,368 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-02-24 00:18:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:18:02,369 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2021-02-24 00:18:02,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:18:02,370 INFO L225 Difference]: With dead ends: 67 [2021-02-24 00:18:02,370 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:18:02,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:18:02,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:18:02,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:18:02,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:18:02,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:18:02,372 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2021-02-24 00:18:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:18:02,372 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:18:02,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-24 00:18:02,373 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:18:02,373 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:18:02,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:18:02,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:18:02,832 WARN L202 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 16 [2021-02-24 00:18:03,027 WARN L202 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2021-02-24 00:18:03,157 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 24 [2021-02-24 00:18:03,270 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 21 [2021-02-24 00:18:03,455 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 20 [2021-02-24 00:18:03,608 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 18 [2021-02-24 00:18:03,619 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 00:18:03,619 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 00:18:03,619 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 00:18:03,619 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 00:18:03,619 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 00:18:03,620 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:18:03,620 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:18:03,620 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 00:18:03,620 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 00:18:03,620 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 00:18:03,620 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 00:18:03,621 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-24 00:18:03,621 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 00:18:03,621 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:18:03,621 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:18:03,621 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:18:03,621 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:18:03,622 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:18:03,622 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-24 00:18:03,622 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-24 00:18:03,622 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:18:03,622 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:18:03,622 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:18:03,622 INFO L192 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: true [2021-02-24 00:18:03,622 INFO L185 CegarLoopUtils]: At program point L33-1(line 33) the Hoare annotation is: (<= 1 main_~MAXPATHLEN~0) [2021-02-24 00:18:03,623 INFO L192 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: true [2021-02-24 00:18:03,623 INFO L192 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-02-24 00:18:03,623 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-24 00:18:03,623 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 45) the Hoare annotation is: true [2021-02-24 00:18:03,623 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 45) the Hoare annotation is: true [2021-02-24 00:18:03,623 INFO L192 CegarLoopUtils]: At program point L44(lines 25 45) the Hoare annotation is: true [2021-02-24 00:18:03,623 INFO L185 CegarLoopUtils]: At program point L42(lines 38 43) the Hoare annotation is: (let ((.cse0 (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0)) (.cse1 (<= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0))) (.cse2 (= main_~pathbuf_off~0 0)) (.cse3 (= main_~glob2_pathbuf_off~0 0))) (or (and (<= 1 main_~MAXPATHLEN~0) (= main_~glob2_p_off~0 0) .cse0 .cse1 .cse2 .cse3) (and (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= 1 main_~glob2_p_off~0) .cse0 .cse1 .cse2 .cse3))) [2021-02-24 00:18:03,624 INFO L185 CegarLoopUtils]: At program point L40(line 40) the Hoare annotation is: (let ((.cse0 (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0)) (.cse1 (<= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0))) (.cse2 (= main_~pathbuf_off~0 0)) (.cse3 (= main_~glob2_pathbuf_off~0 0))) (or (and (<= 1 main_~MAXPATHLEN~0) (= main_~glob2_p_off~0 0) .cse0 (= |main_#t~post4| 0) .cse1 .cse2 .cse3) (and (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) (<= 1 main_~glob2_p_off~0) .cse0 .cse1 (<= 1 |main_#t~post4|) .cse2 .cse3))) [2021-02-24 00:18:03,624 INFO L185 CegarLoopUtils]: At program point L40-1(line 40) the Hoare annotation is: (let ((.cse0 (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0)) (.cse1 (<= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0))) (.cse2 (= main_~pathbuf_off~0 0)) (.cse3 (= main_~glob2_pathbuf_off~0 0))) (or (and (<= 2 main_~glob2_p_off~0) (<= 1 main_~MAXPATHLEN~0) .cse0 .cse1 (<= 1 |main_#t~post4|) .cse2 .cse3) (and (<= 1 main_~glob2_p_off~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) .cse0 (= |main_#t~post4| 0) .cse1 .cse2 .cse3))) [2021-02-24 00:18:03,624 INFO L185 CegarLoopUtils]: At program point L38(line 38) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0)) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0)) [2021-02-24 00:18:03,624 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0)) (= main_~pathbuf_off~0 0)) [2021-02-24 00:18:03,625 INFO L185 CegarLoopUtils]: At program point L38-3(lines 38 43) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (<= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0)) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0)) [2021-02-24 00:18:03,625 INFO L192 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: true [2021-02-24 00:18:03,625 INFO L192 CegarLoopUtils]: At program point L32-1(line 32) the Hoare annotation is: true [2021-02-24 00:18:03,625 INFO L192 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: true [2021-02-24 00:18:03,625 INFO L192 CegarLoopUtils]: At program point L32-2(line 32) the Hoare annotation is: true [2021-02-24 00:18:03,625 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 45) the Hoare annotation is: true [2021-02-24 00:18:03,625 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-24 00:18:03,626 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (<= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0)) (< main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 1)) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0)) [2021-02-24 00:18:03,626 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: (let ((.cse0 (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0)) (.cse1 (<= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0))) (.cse2 (= main_~pathbuf_off~0 0)) (.cse3 (= main_~glob2_pathbuf_off~0 0))) (or (and (<= 1 main_~MAXPATHLEN~0) (= main_~glob2_p_off~0 0) .cse0 .cse1 .cse2 .cse3) (and (<= 1 main_~glob2_p_off~0) (<= main_~glob2_p_off~0 main_~MAXPATHLEN~0) .cse0 .cse1 .cse2 .cse3))) [2021-02-24 00:18:03,626 INFO L185 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (<= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0)) (= main_~pathbuf_off~0 0) (= main_~glob2_pathbuf_off~0 0)) [2021-02-24 00:18:03,626 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (= main_~pathbuf_off~0 0)) [2021-02-24 00:18:03,627 INFO L185 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:18:03,627 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-24 00:18:03,627 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:18:03,627 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:18:03,627 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:18:03,627 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:18:03,628 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:18:03,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:18:03 BoogieIcfgContainer [2021-02-24 00:18:03,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:18:03,653 INFO L168 Benchmark]: Toolchain (without parser) took 6547.25 ms. Allocated memory was 159.4 MB in the beginning and 231.7 MB in the end (delta: 72.4 MB). Free memory was 135.4 MB in the beginning and 198.8 MB in the end (delta: -63.4 MB). Peak memory consumption was 131.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:18:03,653 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 159.4 MB. Free memory is still 132.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:18:03,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.46 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 124.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:18:03,655 INFO L168 Benchmark]: Boogie Preprocessor took 49.86 ms. Allocated memory is still 159.4 MB. Free memory was 124.8 MB in the beginning and 123.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:18:03,655 INFO L168 Benchmark]: RCFGBuilder took 367.86 ms. Allocated memory is still 159.4 MB. Free memory was 123.2 MB in the beginning and 141.5 MB in the end (delta: -18.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:18:03,656 INFO L168 Benchmark]: TraceAbstraction took 5756.08 ms. Allocated memory was 159.4 MB in the beginning and 231.7 MB in the end (delta: 72.4 MB). Free memory was 141.5 MB in the beginning and 198.8 MB in the end (delta: -57.3 MB). Peak memory consumption was 136.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:18:03,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 159.4 MB. Free memory is still 132.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 349.46 ms. Allocated memory is still 159.4 MB. Free memory was 134.2 MB in the beginning and 124.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.86 ms. Allocated memory is still 159.4 MB. Free memory was 124.8 MB in the beginning and 123.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 367.86 ms. Allocated memory is still 159.4 MB. Free memory was 123.2 MB in the beginning and 141.5 MB in the end (delta: -18.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5756.08 ms. Allocated memory was 159.4 MB in the beginning and 231.7 MB in the end (delta: 72.4 MB). Free memory was 141.5 MB in the beginning and 198.8 MB in the end (delta: -57.3 MB). Peak memory consumption was 136.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((1 <= MAXPATHLEN && glob2_pathlim_off <= MAXPATHLEN) && 0 <= glob2_p_off) && bound_off <= pathbuf_off + MAXPATHLEN) && pathbuf_off == 0) && glob2_pathbuf_off == 0 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 197 SDtfs, 379 SDslu, 534 SDs, 0 SdLazy, 1071 SolverSat, 165 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=5, 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, 6 MinimizatonAttempts, 12 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 93 PreInvPairs, 131 NumberOfFragments, 370 HoareAnnotationTreeSize, 93 FomulaSimplifications, 5244 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 44 FomulaSimplificationsInter, 1146 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 285 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 279 ConstructedInterpolants, 0 QuantifiedInterpolants, 32907 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 121/137 InterpolantCoveringCapability, 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...