/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/test04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:04:56,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:04:56,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:04:56,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:04:56,894 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 23:04:56,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:04:56,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:04:56,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:04:56,923 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:04:56,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:04:56,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:04:56,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:04:56,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:04:56,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:04:56,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:04:56,927 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:04:56,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:04:56,927 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:04:56,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:04:56,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:04:56,929 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:04:56,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:04:56,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:04:56,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:04:56,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:04:56,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:04:56,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:04:56,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:04:57,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:04:57,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:04:57,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:04:57,375 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:04:57,378 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:04:57,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test04.c [2021-02-23 23:04:57,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a06a0bdb/fb9d2071b2154655a219acdd689e4b5e/FLAG50b5bccf8 [2021-02-23 23:04:58,007 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:04:58,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test04.c [2021-02-23 23:04:58,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a06a0bdb/fb9d2071b2154655a219acdd689e4b5e/FLAG50b5bccf8 [2021-02-23 23:04:58,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a06a0bdb/fb9d2071b2154655a219acdd689e4b5e [2021-02-23 23:04:58,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:04:58,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:04:58,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:58,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:04:58,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:04:58,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:58" (1/1) ... [2021-02-23 23:04:58,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b53135b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:58, skipping insertion in model container [2021-02-23 23:04:58,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:58" (1/1) ... [2021-02-23 23:04:58,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:04:58,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:04:58,595 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/test04.c[459,472] [2021-02-23 23:04:58,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:58,612 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:04:58,630 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/test04.c[459,472] [2021-02-23 23:04:58,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:58,650 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:04:58,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:58 WrapperNode [2021-02-23 23:04:58,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:58,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:04:58,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:04:58,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:04:58,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:58" (1/1) ... [2021-02-23 23:04:58,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:58" (1/1) ... [2021-02-23 23:04:58,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:58" (1/1) ... [2021-02-23 23:04:58,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:58" (1/1) ... [2021-02-23 23:04:58,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:58" (1/1) ... [2021-02-23 23:04:58,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:58" (1/1) ... [2021-02-23 23:04:58,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:58" (1/1) ... [2021-02-23 23:04:58,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:04:58,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:04:58,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:04:58,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:04:58,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:58" (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 23:04:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:04:58,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:04:58,812 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:04:58,812 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-02-23 23:04:58,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:04:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:04:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:04:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:04:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:04:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-02-23 23:04:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:04:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:04:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:04:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:04:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:04:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:04:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:04:59,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:04:59,253 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 23:04:59,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:59 BoogieIcfgContainer [2021-02-23 23:04:59,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:04:59,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:04:59,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:04:59,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:04:59,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:04:58" (1/3) ... [2021-02-23 23:04:59,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42876df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:59, skipping insertion in model container [2021-02-23 23:04:59,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:58" (2/3) ... [2021-02-23 23:04:59,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42876df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:59, skipping insertion in model container [2021-02-23 23:04:59,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:59" (3/3) ... [2021-02-23 23:04:59,266 INFO L111 eAbstractionObserver]: Analyzing ICFG test04.c [2021-02-23 23:04:59,276 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:04:59,287 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:04:59,311 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:04:59,340 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:04:59,341 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:04:59,341 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:04:59,341 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:04:59,341 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:04:59,341 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:04:59,342 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:04:59,342 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:04:59,360 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2021-02-23 23:04:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-23 23:04:59,372 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:59,373 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] [2021-02-23 23:04:59,374 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:59,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:59,381 INFO L82 PathProgramCache]: Analyzing trace with hash -181545461, now seen corresponding path program 1 times [2021-02-23 23:04:59,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:59,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344338665] [2021-02-23 23:04:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:59,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:59,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:04:59,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:59,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:04:59,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:04:59,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 23:04:59,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:59,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:59,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:59,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:00,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:00,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:00,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:00,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 23:05:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:00,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:00,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:00,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:00,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:00,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:00,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:05:00,204 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 23:05:00,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344338665] [2021-02-23 23:05:00,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:00,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-23 23:05:00,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978666061] [2021-02-23 23:05:00,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-23 23:05:00,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:00,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-23 23:05:00,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-02-23 23:05:00,232 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 13 states. [2021-02-23 23:05:00,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:00,823 INFO L93 Difference]: Finished difference Result 50 states and 49 transitions. [2021-02-23 23:05:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 23:05:00,825 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2021-02-23 23:05:00,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:00,832 INFO L225 Difference]: With dead ends: 50 [2021-02-23 23:05:00,832 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 23:05:00,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2021-02-23 23:05:00,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 23:05:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 23:05:00,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 23:05:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 23:05:00,868 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-02-23 23:05:00,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:00,869 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 23:05:00,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-23 23:05:00,869 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 23:05:00,869 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 23:05:00,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:05:00,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 23:05:01,248 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 23:05:01,249 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 23:05:01,250 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 23:05:01,250 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 23:05:01,250 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 23:05:01,250 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:01,251 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 23:05:01,252 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:01,252 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-23 23:05:01,252 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 23:05:01,252 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 23:05:01,252 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 23:05:01,252 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 23:05:01,253 INFO L185 CegarLoopUtils]: At program point fEXIT(lines 6 8) the Hoare annotation is: (and (= |f_#in~p2.base| f_~p2.base) (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|) (= |f_#in~p1.base| f_~p1.base)) [2021-02-23 23:05:01,253 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (and (= |f_#in~p2.base| f_~p2.base) (= |f_#in~p1.base| f_~p1.base)) [2021-02-23 23:05:01,253 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (= |f_#in~p1.base| f_~p1.base) [2021-02-23 23:05:01,255 INFO L192 CegarLoopUtils]: At program point fENTRY(lines 6 8) the Hoare annotation is: true [2021-02-23 23:05:01,255 INFO L185 CegarLoopUtils]: At program point fFINAL(lines 6 8) the Hoare annotation is: (and (= |f_#in~p2.base| f_~p2.base) (or (= |f_#in~p1.base| |f_#in~p2.base|) (<= |f_#res| 0)) (<= 0 |f_#res|) (= |f_#in~p1.base| f_~p1.base)) [2021-02-23 23:05:01,255 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 23:05:01,256 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:01,256 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 23:05:01,256 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 23:05:01,256 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: false [2021-02-23 23:05:01,256 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 10 26) the Hoare annotation is: (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) [2021-02-23 23:05:01,256 INFO L185 CegarLoopUtils]: At program point L19(lines 10 26) the Hoare annotation is: false [2021-02-23 23:05:01,257 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 10 26) the Hoare annotation is: (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) [2021-02-23 23:05:01,257 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (= (select |#valid| |main_~#a~0.base|) 1) [2021-02-23 23:05:01,257 INFO L185 CegarLoopUtils]: At program point L11-1(line 11) the Hoare annotation is: (and (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1)) [2021-02-23 23:05:01,259 INFO L185 CegarLoopUtils]: At program point L11-2(line 11) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2021-02-23 23:05:01,260 INFO L185 CegarLoopUtils]: At program point L11-3(line 11) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= main_~p1~0.base |main_~#a~0.base|)) [2021-02-23 23:05:01,265 INFO L185 CegarLoopUtils]: At program point L11-4(line 11) the Hoare annotation is: (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) [2021-02-23 23:05:01,265 INFO L185 CegarLoopUtils]: At program point L11-5(line 11) the Hoare annotation is: (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) [2021-02-23 23:05:01,266 INFO L185 CegarLoopUtils]: At program point L11-6(line 11) the Hoare annotation is: false [2021-02-23 23:05:01,266 INFO L185 CegarLoopUtils]: At program point L11-7(line 11) the Hoare annotation is: false [2021-02-23 23:05:01,266 INFO L185 CegarLoopUtils]: At program point L11-8(line 11) the Hoare annotation is: false [2021-02-23 23:05:01,266 INFO L185 CegarLoopUtils]: At program point L11-9(line 11) the Hoare annotation is: false [2021-02-23 23:05:01,266 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 24) the Hoare annotation is: false [2021-02-23 23:05:01,267 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 10 26) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-23 23:05:01,267 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: false [2021-02-23 23:05:01,267 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2021-02-23 23:05:01,267 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2021-02-23 23:05:01,268 INFO L185 CegarLoopUtils]: At program point L18-1(lines 18 20) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= |main_#t~mem8| 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2021-02-23 23:05:01,268 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2021-02-23 23:05:01,268 INFO L185 CegarLoopUtils]: At program point L18-2(line 18) the Hoare annotation is: false [2021-02-23 23:05:01,268 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= |main_#t~ret7| 0) (= main_~p1~0.base |main_~#a~0.base|)) [2021-02-23 23:05:01,268 INFO L185 CegarLoopUtils]: At program point L18-3(line 18) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= |main_#t~mem8| 0) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2021-02-23 23:05:01,269 INFO L185 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (and (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= main_~p1~0.base |main_~#a~0.base|)) [2021-02-23 23:05:01,269 INFO L185 CegarLoopUtils]: At program point L16-2(line 16) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select |#valid| |main_~#a~0.base|) 1) (= |main_#t~ret7| 0) (= main_~p1~0.base |main_~#a~0.base|)) [2021-02-23 23:05:01,269 INFO L185 CegarLoopUtils]: At program point L16-3(line 16) the Hoare annotation is: (and (not (= main_~p1~0.base main_~p2~0.base)) (= main_~p1~0.offset |main_~#a~0.offset|) (not (= |main_~#b~0.base| |main_~#a~0.base|)) (= (select (select |#memory_int| main_~p1~0.base) main_~p1~0.offset) 0) (= (select |#valid| |main_~#a~0.base|) 1) (= |main_#t~ret7| 0) (= main_~p1~0.base |main_~#a~0.base|)) [2021-02-23 23:05:01,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:05:01 BoogieIcfgContainer [2021-02-23 23:05:01,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:05:01,290 INFO L168 Benchmark]: Toolchain (without parser) took 2905.46 ms. Allocated memory is still 159.4 MB. Free memory was 136.6 MB in the beginning and 59.4 MB in the end (delta: 77.2 MB). Peak memory consumption was 78.3 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:01,291 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 159.4 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:05:01,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.24 ms. Allocated memory is still 159.4 MB. Free memory was 135.5 MB in the beginning and 126.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:01,293 INFO L168 Benchmark]: Boogie Preprocessor took 39.92 ms. Allocated memory is still 159.4 MB. Free memory was 126.3 MB in the beginning and 124.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:01,293 INFO L168 Benchmark]: RCFGBuilder took 561.57 ms. Allocated memory is still 159.4 MB. Free memory was 124.9 MB in the beginning and 140.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:01,294 INFO L168 Benchmark]: TraceAbstraction took 2031.96 ms. Allocated memory is still 159.4 MB. Free memory was 139.9 MB in the beginning and 59.4 MB in the end (delta: 80.5 MB). Peak memory consumption was 81.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:01,298 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 159.4 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 246.24 ms. Allocated memory is still 159.4 MB. Free memory was 135.5 MB in the beginning and 126.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.92 ms. Allocated memory is still 159.4 MB. Free memory was 126.3 MB in the beginning and 124.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 561.57 ms. Allocated memory is still 159.4 MB. Free memory was 124.9 MB in the beginning and 140.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2031.96 ms. Allocated memory is still 159.4 MB. Free memory was 139.9 MB in the beginning and 59.4 MB in the end (delta: 80.5 MB). Peak memory consumption was 81.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: 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: 10]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 6]: Procedure Contract for f Derived contract for procedure f: ((p2 == p2 && (p1 == p2 || \result <= 0)) && 0 <= \result) && p1 == p1 - ProcedureContractResult [Line: 10]: Procedure Contract for main Derived contract for procedure main: unknown-#memory_int-unknown[p1][p1] == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 52 SDslu, 146 SDs, 0 SdLazy, 128 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 46 LocationsWithAnnotation, 46 PreInvPairs, 50 NumberOfFragments, 423 HoareAnnotationTreeSize, 46 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 46 FomulaSimplificationsInter, 175 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 4060 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...