/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/ldv-regression/test16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:05:14,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:05:15,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:05:15,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:05:15,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:05:15,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:05:15,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:05:15,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:05:15,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:05:15,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:05:15,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:05:15,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:05:15,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:05:15,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:05:15,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:05:15,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:05:15,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 23:05:15,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:05:15,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:05:15,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:05:15,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:05:15,120 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:05:15,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:05:15,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:05:15,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:05:15,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:05:15,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:05:15,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:05:15,122 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:05:15,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:05:15,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:05:15,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:05:15,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:05:15,123 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:05:15,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:05:15,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:05:15,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:05:15,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:05:15,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:05:15,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:05:15,125 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:05:15,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:05:15,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:05:15,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:05:15,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:05:15,582 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:05:15,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test16.c [2021-02-23 23:05:15,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d283147f1/edfeac7645284c4b9bdf160fbdfea34c/FLAG469cd6a32 [2021-02-23 23:05:16,252 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:05:16,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test16.c [2021-02-23 23:05:16,260 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d283147f1/edfeac7645284c4b9bdf160fbdfea34c/FLAG469cd6a32 [2021-02-23 23:05:16,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d283147f1/edfeac7645284c4b9bdf160fbdfea34c [2021-02-23 23:05:16,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:05:16,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:05:16,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:16,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:05:16,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:05:16,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:16" (1/1) ... [2021-02-23 23:05:16,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33342316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:16, skipping insertion in model container [2021-02-23 23:05:16,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:16" (1/1) ... [2021-02-23 23:05:16,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:05:16,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:05:16,872 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test16.c[379,392] [2021-02-23 23:05:16,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:16,892 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:05:16,906 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test16.c[379,392] [2021-02-23 23:05:16,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:16,925 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:05:16,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:16 WrapperNode [2021-02-23 23:05:16,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:16,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:05:16,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:05:16,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:05:16,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:16" (1/1) ... [2021-02-23 23:05:16,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:16" (1/1) ... [2021-02-23 23:05:16,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:16" (1/1) ... [2021-02-23 23:05:16,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:16" (1/1) ... [2021-02-23 23:05:16,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:16" (1/1) ... [2021-02-23 23:05:16,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:16" (1/1) ... [2021-02-23 23:05:16,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:16" (1/1) ... [2021-02-23 23:05:16,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:05:16,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:05:16,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:05:16,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:05:16,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:16" (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 [2021-02-23 23:05:17,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:05:17,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:05:17,059 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:05:17,060 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2021-02-23 23:05:17,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:05:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:05:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:05:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:05:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:05:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2021-02-23 23:05:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:05:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:05:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:05:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:05:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:05:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:05:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:05:17,407 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:05:17,407 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 23:05:17,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:17 BoogieIcfgContainer [2021-02-23 23:05:17,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:05:17,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:05:17,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:05:17,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:05:17,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:05:16" (1/3) ... [2021-02-23 23:05:17,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb089b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:17, skipping insertion in model container [2021-02-23 23:05:17,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:16" (2/3) ... [2021-02-23 23:05:17,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb089b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:17, skipping insertion in model container [2021-02-23 23:05:17,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:17" (3/3) ... [2021-02-23 23:05:17,425 INFO L111 eAbstractionObserver]: Analyzing ICFG test16.c [2021-02-23 23:05:17,434 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:05:17,440 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:05:17,488 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:05:17,543 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:05:17,543 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:05:17,543 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:05:17,544 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:05:17,544 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:05:17,544 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:05:17,544 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:05:17,544 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:05:17,562 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2021-02-23 23:05:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-23 23:05:17,573 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:17,575 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, 1, 1, 1] [2021-02-23 23:05:17,575 INFO L428 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:17,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:17,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1212656544, now seen corresponding path program 1 times [2021-02-23 23:05:17,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:17,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330180885] [2021-02-23 23:05:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:17,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:17,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:05:18,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:05:18,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:05:18,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 23:05:18,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:05:18,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:05:18,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:05:18,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:05:18,137 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:18,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:18,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:18,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:18,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:18,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:05:18,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:18,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:05:18,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:18,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330180885] [2021-02-23 23:05:18,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:18,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 23:05:18,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322958084] [2021-02-23 23:05:18,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 23:05:18,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:18,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 23:05:18,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-02-23 23:05:18,440 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 14 states. [2021-02-23 23:05:19,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:19,380 INFO L93 Difference]: Finished difference Result 52 states and 51 transitions. [2021-02-23 23:05:19,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 23:05:19,382 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2021-02-23 23:05:19,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:19,389 INFO L225 Difference]: With dead ends: 52 [2021-02-23 23:05:19,390 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 23:05:19,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2021-02-23 23:05:19,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 23:05:19,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 23:05:19,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 23:05:19,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 23:05:19,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-02-23 23:05:19,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:19,424 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 23:05:19,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 23:05:19,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 23:05:19,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 23:05:19,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:05:19,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 23:05:20,138 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2021-02-23 23:05:20,909 WARN L202 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2021-02-23 23:05:20,955 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 23:05:20,956 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 23:05:20,956 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 23:05:20,956 INFO L185 CegarLoopUtils]: At program point L7-6(line 7) the Hoare annotation is: (let ((.cse2 (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|))) (or (not (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|))) (not (= (select |#valid| |~#a~0.base|) 1)) (not (= ~pa~0.base |~#a~0.base|)) (let ((.cse0 (select (select |#memory_int| equal_~a.base) equal_~a.offset)) (.cse1 (select (select |#memory_int| equal_~b.base) equal_~b.offset))) (and (= .cse0 .cse1) (= .cse0 .cse2) (= .cse1 |equal_#t~mem7|))) (not (= .cse2 (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|))) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~pb~0.base)) (not (= ~pa~0.offset |~#a~0.offset|)) (= ~pa~0.base ~pb~0.base))) [2021-02-23 23:05:20,956 INFO L185 CegarLoopUtils]: At program point equalEXIT(lines 6 14) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|))) (or (not (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|))) (not (= (select |#valid| |~#a~0.base|) 1)) (not (= ~pa~0.base |~#a~0.base|)) (let ((.cse0 (select (select |#memory_int| equal_~a.base) equal_~a.offset))) (and (= .cse0 (select (select |#memory_int| equal_~b.base) equal_~b.offset)) (= .cse0 .cse1))) (not (= .cse1 (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|))) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~pb~0.base)) (not (= ~pa~0.offset |~#a~0.offset|)) (= ~pa~0.base ~pb~0.base))) [2021-02-23 23:05:20,957 INFO L192 CegarLoopUtils]: At program point equalENTRY(lines 6 14) the Hoare annotation is: true [2021-02-23 23:05:20,957 INFO L185 CegarLoopUtils]: At program point equalFINAL(lines 6 14) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|))) (or (not (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|))) (not (= (select |#valid| |~#a~0.base|) 1)) (not (= ~pa~0.base |~#a~0.base|)) (let ((.cse0 (select (select |#memory_int| equal_~a.base) equal_~a.offset))) (and (= .cse0 (select (select |#memory_int| equal_~b.base) equal_~b.offset)) (= .cse0 .cse1))) (not (= .cse1 (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|))) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~pb~0.base)) (not (= ~pa~0.offset |~#a~0.offset|)) (= ~pa~0.base ~pb~0.base))) [2021-02-23 23:05:20,957 INFO L185 CegarLoopUtils]: At program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: (or (not (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (not (= |~#a~0.offset| ~pa~0.offset)) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= ~pb~0.base |~#b~0.base|)) (not (= |~#a~0.base| ~pa~0.base)) (= ~pb~0.base ~pa~0.base) (not (= (select |#valid| |~#a~0.base|) 1)) (not (= (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|) (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|)))) [2021-02-23 23:05:20,958 INFO L185 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: (or (not (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (not (= |~#a~0.offset| ~pa~0.offset)) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= ~pb~0.base |~#b~0.base|)) (not (= |~#a~0.base| ~pa~0.base)) (= ~pb~0.base ~pa~0.base) (not (= (select |#valid| |~#a~0.base|) 1)) (not (= (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|) (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|)))) [2021-02-23 23:05:20,958 INFO L185 CegarLoopUtils]: At program point L8(lines 6 14) the Hoare annotation is: (or (not (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (not (= |~#a~0.offset| ~pa~0.offset)) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= ~pb~0.base |~#b~0.base|)) (not (= |~#a~0.base| ~pa~0.base)) (= ~pb~0.base ~pa~0.base) (not (= (select |#valid| |~#a~0.base|) 1)) (not (= (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|) (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|)))) [2021-02-23 23:05:20,958 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|))) (or (not (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|))) (not (= (select |#valid| |~#a~0.base|) 1)) (not (= ~pa~0.base |~#a~0.base|)) (let ((.cse0 (select (select |#memory_int| equal_~a.base) equal_~a.offset))) (and (= .cse0 (select (select |#memory_int| equal_~b.base) equal_~b.offset)) (= .cse0 .cse1))) (not (= .cse1 (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|))) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~pb~0.base)) (not (= ~pa~0.offset |~#a~0.offset|)) (= ~pa~0.base ~pb~0.base))) [2021-02-23 23:05:20,958 INFO L185 CegarLoopUtils]: At program point L6(lines 6 14) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|))) (or (not (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|))) (not (= (select |#valid| |~#a~0.base|) 1)) (not (= ~pa~0.base |~#a~0.base|)) (not (= .cse0 (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|))) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~pb~0.base)) (not (= ~pa~0.offset |~#a~0.offset|)) (= (select (select |#memory_int| equal_~a.base) equal_~a.offset) .cse0) (= ~pa~0.base ~pb~0.base))) [2021-02-23 23:05:20,959 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (let ((.cse2 (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|))) (or (not (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|))) (not (= (select |#valid| |~#a~0.base|) 1)) (not (= ~pa~0.base |~#a~0.base|)) (let ((.cse0 (select (select |#memory_int| equal_~a.base) equal_~a.offset)) (.cse1 (select (select |#memory_int| equal_~b.base) equal_~b.offset))) (and (= .cse0 .cse1) (= .cse0 .cse2) (= .cse1 |equal_#t~mem7|))) (not (= .cse2 (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|))) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~pb~0.base)) (not (= ~pa~0.offset |~#a~0.offset|)) (= ~pa~0.base ~pb~0.base))) [2021-02-23 23:05:20,959 INFO L185 CegarLoopUtils]: At program point L7-2(lines 7 9) the Hoare annotation is: (let ((.cse2 (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|))) (or (not (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|))) (not (= (select |#valid| |~#a~0.base|) 1)) (let ((.cse0 (select (select |#memory_int| equal_~a.base) equal_~a.offset)) (.cse1 (select (select |#memory_int| equal_~b.base) equal_~b.offset))) (and (= |equal_#t~mem8| |equal_#t~mem7|) (= .cse0 .cse1) (= .cse0 .cse2) (= .cse1 |equal_#t~mem7|))) (not (= ~pa~0.base |~#a~0.base|)) (not (= .cse2 (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|))) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~pb~0.base)) (not (= ~pa~0.offset |~#a~0.offset|)) (= ~pa~0.base ~pb~0.base))) [2021-02-23 23:05:20,960 INFO L185 CegarLoopUtils]: At program point L7-3(line 7) the Hoare annotation is: (or (not (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (not (= |~#a~0.offset| ~pa~0.offset)) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= ~pb~0.base |~#b~0.base|)) (not (= |~#a~0.base| ~pa~0.base)) (= ~pb~0.base ~pa~0.base) (not (= (select |#valid| |~#a~0.base|) 1)) (not (= (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|) (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|)))) [2021-02-23 23:05:20,960 INFO L185 CegarLoopUtils]: At program point L7-4(line 7) the Hoare annotation is: (or (not (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (not (= |~#a~0.offset| ~pa~0.offset)) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= ~pb~0.base |~#b~0.base|)) (not (= |~#a~0.base| ~pa~0.base)) (= ~pb~0.base ~pa~0.base) (not (= (select |#valid| |~#a~0.base|) 1)) (not (= (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|) (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|)))) [2021-02-23 23:05:20,960 INFO L185 CegarLoopUtils]: At program point L7-5(line 7) the Hoare annotation is: (let ((.cse2 (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|))) (or (not (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|))) (not (= (select |#valid| |~#a~0.base|) 1)) (let ((.cse0 (select (select |#memory_int| equal_~a.base) equal_~a.offset)) (.cse1 (select (select |#memory_int| equal_~b.base) equal_~b.offset))) (and (= |equal_#t~mem8| |equal_#t~mem7|) (= .cse0 .cse1) (= .cse0 .cse2) (= .cse1 |equal_#t~mem7|))) (not (= ~pa~0.base |~#a~0.base|)) (not (= .cse2 (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|))) (not (= ~pb~0.offset |~#b~0.offset|)) (not (= |~#b~0.base| ~pb~0.base)) (not (= ~pa~0.offset |~#a~0.offset|)) (= ~pa~0.base ~pb~0.base))) [2021-02-23 23:05:20,961 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 23:05:20,961 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 23:05:20,961 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:20,961 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 23:05:20,961 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:20,961 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-23 23:05:20,962 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2021-02-23 23:05:20,962 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2021-02-23 23:05:20,962 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (= (select |#valid| |~#a~0.base|) 1) [2021-02-23 23:05:20,962 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (= (select |#valid| |~#a~0.base|) 1) [2021-02-23 23:05:20,963 INFO L185 CegarLoopUtils]: At program point L16-2(line 16) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2021-02-23 23:05:20,963 INFO L185 CegarLoopUtils]: At program point L16-3(line 16) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2021-02-23 23:05:20,963 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~pa~0.base |old(~pa~0.base)|) (= ~pa~0.offset |old(~pa~0.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~pb~0.base |old(~pb~0.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-02-23 23:05:20,963 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 23:05:20,963 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 23:05:20,964 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2021-02-23 23:05:20,964 INFO L185 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (and (= |~#b~0.base| ~pb~0.base) (= ~pa~0.base |~#a~0.base|) (= (select |#valid| |~#a~0.base|) 1) (= ~pa~0.offset |~#a~0.offset|) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (not (= ~pa~0.base ~pb~0.base)) (= ~pb~0.offset |~#b~0.offset|)) [2021-02-23 23:05:20,964 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2021-02-23 23:05:20,964 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 23:05:20,964 INFO L185 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (and (= |~#b~0.base| ~pb~0.base) (= ~pa~0.base |~#a~0.base|) (= (select |#valid| |~#a~0.base|) 1) (= ~pa~0.offset |~#a~0.offset|) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (not (= ~pa~0.base ~pb~0.base)) (= ~pb~0.offset |~#b~0.offset|)) [2021-02-23 23:05:20,965 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 19 30) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~pa~0.base |old(~pa~0.base)|) (= |old(~pa~0.offset)| ~pa~0.offset) (= |old(~pb~0.base)| ~pb~0.base) (= |old(~pb~0.offset)| ~pb~0.offset)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-23 23:05:20,965 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 19 30) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= |~#b~0.base| ~pb~0.base) (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (= ~pb~0.offset |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-23 23:05:20,965 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= |~#b~0.base| ~pb~0.base) (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (= ~pb~0.offset |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-23 23:05:20,965 INFO L185 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= |~#b~0.base| ~pb~0.base) (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (= ~pb~0.offset |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-23 23:05:20,966 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= |~#b~0.base| ~pb~0.base) (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|) (= |main_#t~mem9| (select (select (store |#memory_int| ~pa~0.base (store (select |#memory_int| ~pa~0.base) ~pa~0.offset |main_#t~mem9|)) |~#b~0.base|) |~#b~0.offset|)) (= ~pb~0.offset |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-23 23:05:20,966 INFO L185 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= |~#b~0.base| ~pb~0.base) (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (= |main_#t~mem9| (select (select (store |#memory_int| ~pa~0.base (store (select |#memory_int| ~pa~0.base) ~pa~0.offset |main_#t~mem9|)) |~#b~0.base|) |~#b~0.offset|)) (= ~pb~0.offset |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-23 23:05:20,966 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 19 30) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= |~#b~0.base| ~pb~0.base) (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (= ~pb~0.offset |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-23 23:05:20,966 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= |~#b~0.base| ~pb~0.base) (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|) (= ~pb~0.offset |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-23 23:05:20,967 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= |~#b~0.base| ~pb~0.base) (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|) (= ~pb~0.offset |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-23 23:05:20,967 INFO L185 CegarLoopUtils]: At program point L23-1(line 23) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= |~#b~0.base| ~pb~0.base) (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|) (= ~pb~0.offset |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-23 23:05:20,967 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~pa~0.base |~#a~0.base|) (= ~pa~0.offset |~#a~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-23 23:05:20,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:05:20 BoogieIcfgContainer [2021-02-23 23:05:20,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:05:20,992 INFO L168 Benchmark]: Toolchain (without parser) took 4372.06 ms. Allocated memory was 170.9 MB in the beginning and 205.5 MB in the end (delta: 34.6 MB). Free memory was 146.2 MB in the beginning and 152.0 MB in the end (delta: -5.8 MB). Peak memory consumption was 111.2 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:20,993 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 170.9 MB. Free memory is still 144.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:05:20,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.05 ms. Allocated memory is still 170.9 MB. Free memory was 145.1 MB in the beginning and 136.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:20,994 INFO L168 Benchmark]: Boogie Preprocessor took 34.25 ms. Allocated memory is still 170.9 MB. Free memory was 136.0 MB in the beginning and 134.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:20,995 INFO L168 Benchmark]: RCFGBuilder took 448.41 ms. Allocated memory is still 170.9 MB. Free memory was 134.5 MB in the beginning and 118.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:20,996 INFO L168 Benchmark]: TraceAbstraction took 3576.67 ms. Allocated memory was 170.9 MB in the beginning and 205.5 MB in the end (delta: 34.6 MB). Free memory was 117.9 MB in the beginning and 152.0 MB in the end (delta: -34.1 MB). Peak memory consumption was 82.9 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:21,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 170.9 MB. Free memory is still 144.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.05 ms. Allocated memory is still 170.9 MB. Free memory was 145.1 MB in the beginning and 136.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.25 ms. Allocated memory is still 170.9 MB. Free memory was 136.0 MB in the beginning and 134.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 448.41 ms. Allocated memory is still 170.9 MB. Free memory was 134.5 MB in the beginning and 118.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3576.67 ms. Allocated memory was 170.9 MB in the beginning and 205.5 MB in the end (delta: 34.6 MB). Free memory was 117.9 MB in the beginning and 152.0 MB in the end (delta: -34.1 MB). Peak memory consumption was 82.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 6]: Loop Invariant Derived loop invariant: ((((((!(unknown-#memory_int-unknown[b][b] == unknown-#memory_int-unknown[a][a]) || !(a == pa)) || !(pb == b)) || !(pb == b)) || !(a == pa)) || pb == pa) || !(\valid[a] == 1)) || !(unknown-#memory_int-unknown[a][a] == unknown-#memory_int-unknown[b][b]) - ProcedureContractResult [Line: 6]: Procedure Contract for equal Derived contract for procedure equal: (((((((!(unknown-#memory_int-unknown[a][a] == unknown-#memory_int-unknown[b][b]) || !(\valid[a] == 1)) || !(pa == a)) || (unknown-#memory_int-unknown[a][a] == unknown-#memory_int-unknown[b][b] && unknown-#memory_int-unknown[a][a] == unknown-#memory_int-unknown[b][b])) || !(unknown-#memory_int-unknown[b][b] == unknown-#memory_int-unknown[a][a])) || !(pb == b)) || !(b == pb)) || !(pa == a)) || pa == pb - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: (!(\valid[a] == 1) || ((((b == pb && pa == a) && pa == a) && unknown-#memory_int-unknown[a][a] == unknown-#memory_int-unknown[b][b]) && pb == b)) || b == a - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 109 SDslu, 130 SDs, 0 SdLazy, 166 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 45 LocationsWithAnnotation, 45 PreInvPairs, 52 NumberOfFragments, 1389 HoareAnnotationTreeSize, 45 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 45 FomulaSimplificationsInter, 1065 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 8349 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...