/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-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:20:55,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:20:55,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:20:55,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 00:20:55,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 00:20:55,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 00:20:55,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 00:20:55,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 00:20:55,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 00:20:55,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 00:20:55,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 00:20:55,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 00:20:55,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:20:55,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:20:55,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:20:55,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:20:55,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:20:55,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:20:55,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:20:55,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:20:55,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:20:55,420 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:20:55,421 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:20:55,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:20:55,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 00:20:55,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 00:20:55,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 00:20:55,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 00:20:55,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 00:20:55,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 00:20:55,428 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 00:20:55,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 00:20:55,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 00:20:55,430 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 00:20:55,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 00:20:55,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 00:20:55,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 00:20:55,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 00:20:55,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:20:55,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:20:55,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:20:55,438 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 00:20:55,451 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:20:55,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:20:55,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:20:55,453 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:20:55,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:20:55,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:20:55,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:20:55,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:20:55,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:20:55,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:20:55,455 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:20:55,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:20:55,456 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:20:55,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:20:55,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:20:55,456 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:20:55,457 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:20:55,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:20:55,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:20:55,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:20:55,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:20:55,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:20:55,458 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:20:55,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:20:55,841 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:20:55,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:20:55,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:20:55,846 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:20:55,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2021-02-24 00:20:55,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e43ed093/291307746ed44b6e96d99a9b0f9884e7/FLAGb962994cc [2021-02-24 00:20:56,625 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:20:56,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2021-02-24 00:20:56,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e43ed093/291307746ed44b6e96d99a9b0f9884e7/FLAGb962994cc [2021-02-24 00:20:56,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e43ed093/291307746ed44b6e96d99a9b0f9884e7 [2021-02-24 00:20:56,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:20:56,997 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:20:56,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:20:56,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:20:57,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:20:57,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:20:56" (1/1) ... [2021-02-24 00:20:57,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7733fe3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:57, skipping insertion in model container [2021-02-24 00:20:57,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:20:56" (1/1) ... [2021-02-24 00:20:57,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:20:57,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:20:57,204 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-lit/cggmp2005_variant.i[895,908] [2021-02-24 00:20:57,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:20:57,225 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:20:57,240 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-lit/cggmp2005_variant.i[895,908] [2021-02-24 00:20:57,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:20:57,260 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:20:57,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:57 WrapperNode [2021-02-24 00:20:57,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:20:57,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:20:57,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:20:57,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:20:57,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:57" (1/1) ... [2021-02-24 00:20:57,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:57" (1/1) ... [2021-02-24 00:20:57,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:57" (1/1) ... [2021-02-24 00:20:57,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:57" (1/1) ... [2021-02-24 00:20:57,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:57" (1/1) ... [2021-02-24 00:20:57,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:57" (1/1) ... [2021-02-24 00:20:57,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:57" (1/1) ... [2021-02-24 00:20:57,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:20:57,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:20:57,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:20:57,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:20:57,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:57" (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 00:20:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:20:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:20:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:20:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:20:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:20:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:20:57,401 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:20:57,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:20:57,401 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 00:20:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 00:20:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:20:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:20:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:20:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:20:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:20:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:20:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:20:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:20:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:20:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:20:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:20:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:20:57,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:20:57,712 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:20:57,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:20:57 BoogieIcfgContainer [2021-02-24 00:20:57,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:20:57,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:20:57,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:20:57,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:20:57,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:20:56" (1/3) ... [2021-02-24 00:20:57,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106fe270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:20:57, skipping insertion in model container [2021-02-24 00:20:57,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:20:57" (2/3) ... [2021-02-24 00:20:57,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106fe270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:20:57, skipping insertion in model container [2021-02-24 00:20:57,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:20:57" (3/3) ... [2021-02-24 00:20:57,723 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2021-02-24 00:20:57,729 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:20:57,733 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:20:57,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:20:57,788 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:20:57,789 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:20:57,789 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:20:57,789 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:20:57,789 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:20:57,789 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:20:57,789 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:20:57,790 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:20:57,804 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2021-02-24 00:20:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-24 00:20:57,814 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:57,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:20:57,815 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:57,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:57,821 INFO L82 PathProgramCache]: Analyzing trace with hash -297017165, now seen corresponding path program 1 times [2021-02-24 00:20:57,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:57,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359882187] [2021-02-24 00:20:57,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:58,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:58,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:58,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:58,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:58,081 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 00:20:58,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359882187] [2021-02-24 00:20:58,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:20:58,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 00:20:58,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062448123] [2021-02-24 00:20:58,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 00:20:58,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:58,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 00:20:58,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 00:20:58,106 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2021-02-24 00:20:58,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:58,249 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2021-02-24 00:20:58,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 00:20:58,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-02-24 00:20:58,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:58,259 INFO L225 Difference]: With dead ends: 51 [2021-02-24 00:20:58,259 INFO L226 Difference]: Without dead ends: 30 [2021-02-24 00:20:58,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:20:58,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-24 00:20:58,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-02-24 00:20:58,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-24 00:20:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-02-24 00:20:58,327 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2021-02-24 00:20:58,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:58,328 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-02-24 00:20:58,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 00:20:58,328 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-02-24 00:20:58,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-24 00:20:58,329 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:58,329 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] [2021-02-24 00:20:58,330 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:20:58,330 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:58,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:58,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1229223985, now seen corresponding path program 1 times [2021-02-24 00:20:58,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:58,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632694588] [2021-02-24 00:20:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:58,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:58,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:58,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:20:58,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 00:20:58,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:58,502 WARN L141 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-02-24 00:20:58,505 WARN L147 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size 19 [2021-02-24 00:20:58,532 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-24 00:20:58,537 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-24 00:20:58,563 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-24 00:20:58,569 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-24 00:20:58,583 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:58,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:58,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:58,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:58,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:58,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:58,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632694588] [2021-02-24 00:20:58,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:58,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-02-24 00:20:58,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634527601] [2021-02-24 00:20:58,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 00:20:58,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:58,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 00:20:58,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:20:58,677 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 12 states. [2021-02-24 00:20:59,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:20:59,187 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-02-24 00:20:59,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:20:59,187 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2021-02-24 00:20:59,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:20:59,189 INFO L225 Difference]: With dead ends: 40 [2021-02-24 00:20:59,189 INFO L226 Difference]: Without dead ends: 35 [2021-02-24 00:20:59,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2021-02-24 00:20:59,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-24 00:20:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-02-24 00:20:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-24 00:20:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-02-24 00:20:59,203 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 29 [2021-02-24 00:20:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:20:59,203 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-02-24 00:20:59,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 00:20:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-02-24 00:20:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-24 00:20:59,205 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:20:59,205 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:20:59,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:20:59,206 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:20:59,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:20:59,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1089920849, now seen corresponding path program 2 times [2021-02-24 00:20:59,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:20:59,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333268390] [2021-02-24 00:20:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:20:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:59,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:59,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:20:59,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:20:59,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:20:59,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:20:59,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:59,328 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:20:59,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:20:59,358 WARN L141 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-02-24 00:20:59,360 WARN L147 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size 19 [2021-02-24 00:20:59,382 WARN L141 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size [2021-02-24 00:20:59,383 WARN L147 QuantifierPusher]: treesize reduction 5, result has 77.3 percent of original size 17 [2021-02-24 00:20:59,404 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-24 00:20:59,405 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-24 00:20:59,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:59,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:20:59,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:59,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:20:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:20:59,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:20:59,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:20:59,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:20:59,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333268390] [2021-02-24 00:20:59,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:20:59,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-24 00:20:59,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978943005] [2021-02-24 00:20:59,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 00:20:59,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:20:59,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 00:20:59,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:20:59,499 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 15 states. [2021-02-24 00:21:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:21:00,039 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-02-24 00:21:00,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 00:21:00,040 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 33 [2021-02-24 00:21:00,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:21:00,041 INFO L225 Difference]: With dead ends: 34 [2021-02-24 00:21:00,041 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:21:00,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2021-02-24 00:21:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:21:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:21:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:21:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:21:00,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-02-24 00:21:00,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:21:00,043 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:21:00,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 00:21:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:21:00,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:21:00,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:21:00,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:21:00,453 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 00:21:00,453 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 00:21:00,453 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 00:21:00,454 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 00:21:00,454 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 00:21:00,454 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:21:00,454 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:21:00,455 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 00:21:00,455 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 00:21:00,455 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 00:21:00,455 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 00:21:00,455 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 00:21:00,456 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 00:21:00,456 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:21:00,456 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:21:00,456 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:21:00,456 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:21:00,456 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:21:00,457 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-24 00:21:00,457 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-24 00:21:00,457 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:21:00,457 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:21:00,457 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:21:00,457 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~mid~0) main_~lo~0)) (.cse0 (+ main_~hi~0 2))) (and (< 0 main_~mid~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-02-24 00:21:00,458 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= main_~hi~0 .cse0) (<= (+ main_~lo~0 2) main_~hi~0) (<= .cse0 main_~hi~0))) [2021-02-24 00:21:00,458 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (and (= main_~lo~0 0) (<= 1 main_~mid~0)) [2021-02-24 00:21:00,458 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (= main_~lo~0 0) [2021-02-24 00:21:00,458 INFO L185 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: (= main_~lo~0 0) [2021-02-24 00:21:00,458 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-24 00:21:00,458 INFO L185 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: (= main_~lo~0 0) [2021-02-24 00:21:00,459 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 37) the Hoare annotation is: true [2021-02-24 00:21:00,459 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-24 00:21:00,459 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 37) the Hoare annotation is: true [2021-02-24 00:21:00,459 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (let ((.cse1 (+ (* 2 main_~mid~0) main_~lo~0)) (.cse0 (+ main_~hi~0 1))) (and (<= (+ main_~lo~0 1) main_~hi~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-02-24 00:21:00,459 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2021-02-24 00:21:00,460 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (= main_~lo~0 0) [2021-02-24 00:21:00,460 INFO L185 CegarLoopUtils]: At program point L30-2(lines 30 34) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= main_~lo~0 main_~hi~0) (<= main_~hi~0 .cse0) (<= .cse0 main_~hi~0))) [2021-02-24 00:21:00,460 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-24 00:21:00,460 INFO L185 CegarLoopUtils]: At program point L30-3(lines 30 34) the Hoare annotation is: (and (< main_~hi~0 (+ main_~lo~0 1)) (<= main_~lo~0 main_~hi~0)) [2021-02-24 00:21:00,460 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-24 00:21:00,460 INFO L192 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: true [2021-02-24 00:21:00,461 INFO L192 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-02-24 00:21:00,461 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-24 00:21:00,461 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-02-24 00:21:00,461 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:21:00,461 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:21:00,462 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 00:21:00,462 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:21:00,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:21:00 BoogieIcfgContainer [2021-02-24 00:21:00,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:21:00,481 INFO L168 Benchmark]: Toolchain (without parser) took 3496.29 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 128.9 MB in the beginning and 143.9 MB in the end (delta: -15.0 MB). Peak memory consumption was 98.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:00,482 INFO L168 Benchmark]: CDTParser took 0.93 ms. Allocated memory is still 152.0 MB. Free memory was 125.6 MB in the beginning and 125.4 MB in the end (delta: 107.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:21:00,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.80 ms. Allocated memory is still 152.0 MB. Free memory was 127.8 MB in the beginning and 118.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:00,484 INFO L168 Benchmark]: Boogie Preprocessor took 34.93 ms. Allocated memory is still 152.0 MB. Free memory was 118.3 MB in the beginning and 116.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:00,485 INFO L168 Benchmark]: RCFGBuilder took 416.04 ms. Allocated memory is still 152.0 MB. Free memory was 116.9 MB in the beginning and 102.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:00,486 INFO L168 Benchmark]: TraceAbstraction took 2764.24 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 101.6 MB in the beginning and 143.9 MB in the end (delta: -42.3 MB). Peak memory consumption was 71.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:00,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.93 ms. Allocated memory is still 152.0 MB. Free memory was 125.6 MB in the beginning and 125.4 MB in the end (delta: 107.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.80 ms. Allocated memory is still 152.0 MB. Free memory was 127.8 MB in the beginning and 118.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.93 ms. Allocated memory is still 152.0 MB. Free memory was 118.3 MB in the beginning and 116.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 416.04 ms. Allocated memory is still 152.0 MB. Free memory was 116.9 MB in the beginning and 102.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2764.24 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 101.6 MB in the beginning and 143.9 MB in the end (delta: -42.3 MB). Peak memory consumption was 71.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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: 30]: Loop Invariant Derived loop invariant: (lo <= hi && hi <= 2 * mid + lo) && 2 * mid + lo <= hi - 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: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 75 SDslu, 214 SDs, 0 SdLazy, 297 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 52 PreInvPairs, 67 NumberOfFragments, 177 HoareAnnotationTreeSize, 52 FomulaSimplifications, 268 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 38 FomulaSimplificationsInter, 660 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 12360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/7 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...