/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:35:10,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:35:10,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:35:10,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:35:10,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:35:10,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:35:10,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:35:10,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:35:10,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:35:10,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:35:10,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:35:10,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:35:10,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:35:10,347 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:35:10,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:35:10,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:35:10,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:35:10,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:35:10,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:35:10,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:35:10,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:35:10,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:35:10,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:35:10,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:35:10,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:35:10,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:35:10,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:35:10,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:35:10,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:35:10,433 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:35:10,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:35:10,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:35:10,439 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:35:10,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:35:10,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:35:10,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:35:10,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:35:10,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:35:10,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:35:10,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:35:10,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:35:10,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:35:10,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:35:10,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:35:10,444 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:35:10,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:35:10,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:35:10,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:35:10,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:35:10,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:35:10,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:35:10,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:35:10,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:35:10,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:35:10,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:35:10,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:35:10,925 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:35:10,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-10-23 20:35:11,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c22ea33b/b7ac06692fe24f379bb50a448d0f48df/FLAG001fbabbe [2020-10-23 20:35:11,657 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:35:11,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-10-23 20:35:11,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c22ea33b/b7ac06692fe24f379bb50a448d0f48df/FLAG001fbabbe [2020-10-23 20:35:12,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c22ea33b/b7ac06692fe24f379bb50a448d0f48df [2020-10-23 20:35:12,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:35:12,054 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:35:12,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:35:12,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:35:12,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:35:12,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:12" (1/1) ... [2020-10-23 20:35:12,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7133fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:12, skipping insertion in model container [2020-10-23 20:35:12,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:12" (1/1) ... [2020-10-23 20:35:12,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:35:12,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:35:12,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:35:12,404 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:35:12,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:35:12,443 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:35:12,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:12 WrapperNode [2020-10-23 20:35:12,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:35:12,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:35:12,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:35:12,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:35:12,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:12" (1/1) ... [2020-10-23 20:35:12,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:12" (1/1) ... [2020-10-23 20:35:12,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:12" (1/1) ... [2020-10-23 20:35:12,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:12" (1/1) ... [2020-10-23 20:35:12,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:12" (1/1) ... [2020-10-23 20:35:12,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:12" (1/1) ... [2020-10-23 20:35:12,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:12" (1/1) ... [2020-10-23 20:35:12,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:35:12,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:35:12,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:35:12,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:35:12,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:12" (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 [2020-10-23 20:35:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:35:12,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:35:12,575 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:35:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-23 20:35:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-10-23 20:35:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-23 20:35:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:35:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:35:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:35:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:35:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:35:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:35:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-23 20:35:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-23 20:35:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:35:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-10-23 20:35:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-23 20:35:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:35:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:35:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:35:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:35:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:35:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:35:13,063 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:35:13,068 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 20:35:13,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:13 BoogieIcfgContainer [2020-10-23 20:35:13,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:35:13,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:35:13,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:35:13,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:35:13,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:35:12" (1/3) ... [2020-10-23 20:35:13,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2e4600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:13, skipping insertion in model container [2020-10-23 20:35:13,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:12" (2/3) ... [2020-10-23 20:35:13,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2e4600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:13, skipping insertion in model container [2020-10-23 20:35:13,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:13" (3/3) ... [2020-10-23 20:35:13,086 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-10-23 20:35:13,101 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:35:13,107 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:35:13,122 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:35:13,159 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:35:13,159 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:35:13,159 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:35:13,159 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:35:13,159 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:35:13,159 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:35:13,160 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:35:13,160 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:35:13,178 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2020-10-23 20:35:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-23 20:35:13,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:13,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1] [2020-10-23 20:35:13,192 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:13,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:13,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1117705011, now seen corresponding path program 1 times [2020-10-23 20:35:13,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:13,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622869454] [2020-10-23 20:35:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:13,286 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:13,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:13,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:35:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:13,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 20:35:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:13,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-23 20:35:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:13,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-23 20:35:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:13,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-23 20:35:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-23 20:35:13,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622869454] [2020-10-23 20:35:13,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:13,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:35:13,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824259924] [2020-10-23 20:35:13,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:35:13,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:13,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:35:13,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:35:13,742 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 4 states. [2020-10-23 20:35:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:14,157 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-10-23 20:35:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:35:14,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-23 20:35:14,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:14,171 INFO L225 Difference]: With dead ends: 117 [2020-10-23 20:35:14,172 INFO L226 Difference]: Without dead ends: 85 [2020-10-23 20:35:14,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:35:14,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-23 20:35:14,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-23 20:35:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-23 20:35:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-23 20:35:14,257 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 89 [2020-10-23 20:35:14,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:14,259 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-23 20:35:14,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:35:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-23 20:35:14,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-23 20:35:14,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:14,264 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1] [2020-10-23 20:35:14,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:35:14,265 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:14,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1027369886, now seen corresponding path program 1 times [2020-10-23 20:35:14,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:14,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273847186] [2020-10-23 20:35:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:14,271 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:14,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:14,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:35:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:14,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 20:35:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:14,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-23 20:35:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:14,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-23 20:35:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:14,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-23 20:35:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-23 20:35:14,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273847186] [2020-10-23 20:35:14,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:14,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:35:14,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598054345] [2020-10-23 20:35:14,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:35:14,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:14,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:35:14,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:35:14,526 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 5 states. [2020-10-23 20:35:14,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:14,939 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2020-10-23 20:35:14,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:35:14,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-23 20:35:14,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:14,942 INFO L225 Difference]: With dead ends: 113 [2020-10-23 20:35:14,942 INFO L226 Difference]: Without dead ends: 85 [2020-10-23 20:35:14,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:35:14,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-23 20:35:14,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-23 20:35:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-23 20:35:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2020-10-23 20:35:14,969 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 91 [2020-10-23 20:35:14,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:14,970 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2020-10-23 20:35:14,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:35:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2020-10-23 20:35:14,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-23 20:35:14,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:14,972 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:14,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:35:14,973 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:14,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:14,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1152316641, now seen corresponding path program 1 times [2020-10-23 20:35:14,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:14,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243383941] [2020-10-23 20:35:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:14,978 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:15,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:15,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:35:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:15,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-23 20:35:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:15,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-23 20:35:15,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:15,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-23 20:35:15,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:15,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-23 20:35:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:15,375 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-23 20:35:15,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243383941] [2020-10-23 20:35:15,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:15,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:35:15,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33538255] [2020-10-23 20:35:15,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:35:15,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:15,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:35:15,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:35:15,379 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 14 states. [2020-10-23 20:35:17,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:17,721 INFO L93 Difference]: Finished difference Result 172 states and 185 transitions. [2020-10-23 20:35:17,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:35:17,722 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-23 20:35:17,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:17,726 INFO L225 Difference]: With dead ends: 172 [2020-10-23 20:35:17,728 INFO L226 Difference]: Without dead ends: 157 [2020-10-23 20:35:17,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2020-10-23 20:35:17,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-23 20:35:17,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 114. [2020-10-23 20:35:17,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-23 20:35:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-10-23 20:35:17,789 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 93 [2020-10-23 20:35:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:17,790 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-10-23 20:35:17,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:35:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-10-23 20:35:17,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-23 20:35:17,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:17,793 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:17,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:35:17,793 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:17,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:17,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1012289407, now seen corresponding path program 1 times [2020-10-23 20:35:17,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:17,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711849519] [2020-10-23 20:35:17,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:17,798 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:35:17,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:35:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:35:17,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:35:17,915 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:35:17,915 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:35:17,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:35:17,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:35:17 BoogieIcfgContainer [2020-10-23 20:35:17,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:35:17,942 INFO L168 Benchmark]: Toolchain (without parser) took 5892.72 ms. Allocated memory was 125.8 MB in the beginning and 204.5 MB in the end (delta: 78.6 MB). Free memory was 102.7 MB in the beginning and 140.4 MB in the end (delta: -37.7 MB). Peak memory consumption was 41.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:17,943 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 101.5 MB in the end (delta: 64.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:35:17,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.91 ms. Allocated memory is still 125.8 MB. Free memory was 102.0 MB in the beginning and 92.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:17,945 INFO L168 Benchmark]: Boogie Preprocessor took 42.91 ms. Allocated memory is still 125.8 MB. Free memory was 92.2 MB in the beginning and 90.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:17,946 INFO L168 Benchmark]: RCFGBuilder took 583.30 ms. Allocated memory was 125.8 MB in the beginning and 169.9 MB in the end (delta: 44.0 MB). Free memory was 90.5 MB in the beginning and 143.2 MB in the end (delta: -52.7 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:17,947 INFO L168 Benchmark]: TraceAbstraction took 4864.22 ms. Allocated memory was 169.9 MB in the beginning and 204.5 MB in the end (delta: 34.6 MB). Free memory was 142.8 MB in the beginning and 140.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 36.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:17,951 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 101.5 MB in the end (delta: 64.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 384.91 ms. Allocated memory is still 125.8 MB. Free memory was 102.0 MB in the beginning and 92.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.91 ms. Allocated memory is still 125.8 MB. Free memory was 92.2 MB in the beginning and 90.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 583.30 ms. Allocated memory was 125.8 MB in the beginning and 169.9 MB in the end (delta: 44.0 MB). Free memory was 90.5 MB in the beginning and 143.2 MB in the end (delta: -52.7 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4864.22 ms. Allocated memory was 169.9 MB in the beginning and 204.5 MB in the end (delta: 34.6 MB). Free memory was 142.8 MB in the beginning and 140.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 36.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] struct dummy d1, d2; [L34] CALL init() [L15] d1.a = __VERIFIER_nondet_int() [L16] d1.b = __VERIFIER_nondet_int() [L18] d2.a = __VERIFIER_nondet_int() [L19] d2.b = __VERIFIER_nondet_int() [L34] RET init() [L35] CALL, EXPR get_dummy() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L35] CALL, EXPR get_dummy() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L35] CALL, EXPR get_dummy() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L36] int i = __VERIFIER_nondet_int(); [L37] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L37] EXPR (*pd2).a [L37] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L37] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L38] int *pa = &pd1->a; [L39] EXPR pd3->a [L39] i = pd3->a - 10 [L40] EXPR \read(*pa) [L40] COND FALSE !(i < *pa) [L43] CALL, EXPR check(pd2, i) [L29] EXPR s1->a [L29] return s1->a == i; [L43] RET, EXPR check(pd2, i) [L43] COND TRUE !check(pd2, i) [L50] CALL reach_error() [L3] __assert_fail("0", "test22-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 97 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 221 SDtfs, 411 SDslu, 95 SDs, 0 SdLazy, 1334 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 43 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...