/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/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:52:30,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:52:30,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:52:30,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 01:52:30,933 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 01:52:30,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:52:30,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:52:30,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:52:30,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:52:30,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:52:30,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:52:30,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:52:30,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:52:30,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:52:30,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:52:30,972 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:52:30,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:52:30,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:52:30,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:52:30,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:52:30,974 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:52:30,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:52:30,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:52:30,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:52:30,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:52:30,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:52:30,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:52:30,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:52:31,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:52:31,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:52:31,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:52:31,446 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:52:31,447 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:52:31,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-11-07 01:52:31,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/651f10b7f/bfae5a3464084e4e8ad7b3e208120b7d/FLAG6fe9af631 [2020-11-07 01:52:32,289 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:52:32,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_security.c [2020-11-07 01:52:32,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/651f10b7f/bfae5a3464084e4e8ad7b3e208120b7d/FLAG6fe9af631 [2020-11-07 01:52:32,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/651f10b7f/bfae5a3464084e4e8ad7b3e208120b7d [2020-11-07 01:52:32,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:52:32,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:52:32,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:52:32,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:52:32,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:52:32,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:32" (1/1) ... [2020-11-07 01:52:32,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767379e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:32, skipping insertion in model container [2020-11-07 01:52:32,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:52:32" (1/1) ... [2020-11-07 01:52:32,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:52:32,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:52:32,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:52:32,924 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:52:32,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:52:32,994 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:52:32,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:32 WrapperNode [2020-11-07 01:52:32,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:52:32,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:52:32,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:52:32,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:52:33,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:32" (1/1) ... [2020-11-07 01:52:33,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:32" (1/1) ... [2020-11-07 01:52:33,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:32" (1/1) ... [2020-11-07 01:52:33,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:32" (1/1) ... [2020-11-07 01:52:33,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:32" (1/1) ... [2020-11-07 01:52:33,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:32" (1/1) ... [2020-11-07 01:52:33,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:32" (1/1) ... [2020-11-07 01:52:33,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:52:33,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:52:33,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:52:33,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:52:33,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:32" (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 [2020-11-07 01:52:33,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:52:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:52:33,190 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:52:33,191 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:52:33,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:52:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:52:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:52:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:52:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:52:33,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:52:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:52:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:52:33,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:52:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:52:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:52:33,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:52:34,076 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:52:34,076 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-07 01:52:34,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:34 BoogieIcfgContainer [2020-11-07 01:52:34,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:52:34,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:52:34,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:52:34,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:52:34,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:52:32" (1/3) ... [2020-11-07 01:52:34,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384d0fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:52:34, skipping insertion in model container [2020-11-07 01:52:34,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:52:32" (2/3) ... [2020-11-07 01:52:34,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384d0fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:52:34, skipping insertion in model container [2020-11-07 01:52:34,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:52:34" (3/3) ... [2020-11-07 01:52:34,091 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-11-07 01:52:34,109 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:52:34,115 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:52:34,130 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:52:34,163 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:52:34,163 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:52:34,163 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:52:34,163 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:52:34,164 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:52:34,164 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:52:34,164 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:52:34,164 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:52:34,189 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2020-11-07 01:52:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-07 01:52:34,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:52:34,203 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] [2020-11-07 01:52:34,204 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:52:34,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:52:34,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1657313552, now seen corresponding path program 1 times [2020-11-07 01:52:34,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:52:34,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015331236] [2020-11-07 01:52:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:52:34,369 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:52:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:34,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:52:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:52:34,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015331236] [2020-11-07 01:52:34,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:52:34,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:52:34,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198548113] [2020-11-07 01:52:34,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:52:34,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:52:34,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:52:34,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:52:34,670 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 3 states. [2020-11-07 01:52:34,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:52:34,918 INFO L93 Difference]: Finished difference Result 382 states and 521 transitions. [2020-11-07 01:52:34,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:52:34,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-07 01:52:34,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:52:34,936 INFO L225 Difference]: With dead ends: 382 [2020-11-07 01:52:34,937 INFO L226 Difference]: Without dead ends: 187 [2020-11-07 01:52:34,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:52:34,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-11-07 01:52:35,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-11-07 01:52:35,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-11-07 01:52:35,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 222 transitions. [2020-11-07 01:52:35,067 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 222 transitions. Word has length 31 [2020-11-07 01:52:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:52:35,067 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 222 transitions. [2020-11-07 01:52:35,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:52:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 222 transitions. [2020-11-07 01:52:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-07 01:52:35,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:52:35,070 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] [2020-11-07 01:52:35,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:52:35,071 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:52:35,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:52:35,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1836702352, now seen corresponding path program 1 times [2020-11-07 01:52:35,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:52:35,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466969437] [2020-11-07 01:52:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:52:35,078 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:52:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:35,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:52:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:52:35,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466969437] [2020-11-07 01:52:35,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:52:35,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 01:52:35,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360762428] [2020-11-07 01:52:35,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 01:52:35,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:52:35,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 01:52:35,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 01:52:35,214 INFO L87 Difference]: Start difference. First operand 187 states and 222 transitions. Second operand 4 states. [2020-11-07 01:52:35,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:52:35,936 INFO L93 Difference]: Finished difference Result 356 states and 427 transitions. [2020-11-07 01:52:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 01:52:35,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-07 01:52:35,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:52:35,940 INFO L225 Difference]: With dead ends: 356 [2020-11-07 01:52:35,940 INFO L226 Difference]: Without dead ends: 190 [2020-11-07 01:52:35,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:52:35,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-11-07 01:52:35,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-11-07 01:52:35,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-11-07 01:52:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions. [2020-11-07 01:52:35,997 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 32 [2020-11-07 01:52:35,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:52:35,997 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 225 transitions. [2020-11-07 01:52:35,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 01:52:35,998 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions. [2020-11-07 01:52:35,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-07 01:52:35,999 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:52:36,000 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:52:36,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:52:36,000 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:52:36,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:52:36,001 INFO L82 PathProgramCache]: Analyzing trace with hash 284979922, now seen corresponding path program 1 times [2020-11-07 01:52:36,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:52:36,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621877214] [2020-11-07 01:52:36,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:52:36,188 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:52:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:36,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:52:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:52:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:52:37,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621877214] [2020-11-07 01:52:37,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:52:37,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 01:52:37,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327386581] [2020-11-07 01:52:37,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 01:52:37,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:52:37,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 01:52:37,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-07 01:52:37,250 INFO L87 Difference]: Start difference. First operand 190 states and 225 transitions. Second operand 13 states. [2020-11-07 01:52:39,126 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-11-07 01:52:39,339 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-11-07 01:52:39,564 WARN L194 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-11-07 01:52:40,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:52:40,639 INFO L93 Difference]: Finished difference Result 476 states and 579 transitions. [2020-11-07 01:52:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 01:52:40,645 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-11-07 01:52:40,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:52:40,648 INFO L225 Difference]: With dead ends: 476 [2020-11-07 01:52:40,649 INFO L226 Difference]: Without dead ends: 292 [2020-11-07 01:52:40,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2020-11-07 01:52:40,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-11-07 01:52:40,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 254. [2020-11-07 01:52:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-07 01:52:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 306 transitions. [2020-11-07 01:52:40,776 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 306 transitions. Word has length 41 [2020-11-07 01:52:40,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:52:40,778 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 306 transitions. [2020-11-07 01:52:40,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 01:52:40,779 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 306 transitions. [2020-11-07 01:52:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-07 01:52:40,790 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:52:40,791 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 01:52:40,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:52:40,791 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:52:40,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:52:40,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1010017563, now seen corresponding path program 1 times [2020-11-07 01:52:40,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:52:40,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514356035] [2020-11-07 01:52:40,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:52:40,914 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 01:52:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:52:40,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:52:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:52:40,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:52:41,035 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:52:41,035 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:52:41,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 01:52:41,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:52:41 BoogieIcfgContainer [2020-11-07 01:52:41,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:52:41,063 INFO L168 Benchmark]: Toolchain (without parser) took 8468.47 ms. Allocated memory was 153.1 MB in the beginning and 233.8 MB in the end (delta: 80.7 MB). Free memory was 109.8 MB in the beginning and 93.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 97.8 MB. Max. memory is 8.0 GB. [2020-11-07 01:52:41,064 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 153.1 MB. Free memory was 126.3 MB in the beginning and 126.3 MB in the end (delta: 76.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:52:41,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.04 ms. Allocated memory is still 153.1 MB. Free memory was 137.2 MB in the beginning and 125.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:52:41,066 INFO L168 Benchmark]: Boogie Preprocessor took 88.50 ms. Allocated memory is still 153.1 MB. Free memory was 125.6 MB in the beginning and 135.1 MB in the end (delta: -9.5 MB). Peak memory consumption was 1.6 MB. Max. memory is 8.0 GB. [2020-11-07 01:52:41,067 INFO L168 Benchmark]: RCFGBuilder took 993.98 ms. Allocated memory is still 153.1 MB. Free memory was 135.1 MB in the beginning and 97.0 MB in the end (delta: 38.1 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. [2020-11-07 01:52:41,068 INFO L168 Benchmark]: TraceAbstraction took 6978.76 ms. Allocated memory was 153.1 MB in the beginning and 233.8 MB in the end (delta: 80.7 MB). Free memory was 96.7 MB in the beginning and 93.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 84.6 MB. Max. memory is 8.0 GB. [2020-11-07 01:52:41,073 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 153.1 MB. Free memory was 126.3 MB in the beginning and 126.3 MB in the end (delta: 76.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 376.04 ms. Allocated memory is still 153.1 MB. Free memory was 137.2 MB in the beginning and 125.6 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.50 ms. Allocated memory is still 153.1 MB. Free memory was 125.6 MB in the beginning and 135.1 MB in the end (delta: -9.5 MB). Peak memory consumption was 1.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 993.98 ms. Allocated memory is still 153.1 MB. Free memory was 135.1 MB in the beginning and 97.0 MB in the end (delta: 38.1 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6978.76 ms. Allocated memory was 153.1 MB in the beginning and 233.8 MB in the end (delta: 80.7 MB). Free memory was 96.7 MB in the beginning and 93.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 84.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L7] int m_initSign = 1; [L8] int m_initVerify = 2; [L9] int m_Signature = 3; [L10] int m_sign = 4; [L11] int m_verify = 5; [L12] int m_update = 6; [L17] int q = 0; [L18] int method_id; [L21] int this_state = 0; [L24] COND TRUE 1 [L29] COND TRUE q == 0 [L30] COND TRUE __VERIFIER_nondet_int() [L34] method_id = 3 [L36] COND FALSE !(0) [L40] q = 2 [L42] this_state=0 [L24] COND TRUE 1 [L29] COND FALSE !(q == 0) [L49] COND FALSE !(q == 1) [L101] COND TRUE q == 2 [L102] COND FALSE !(__VERIFIER_nondet_int()) [L118] COND FALSE !(__VERIFIER_nondet_int()) [L134] COND FALSE !(__VERIFIER_nondet_int()) [L150] COND TRUE __VERIFIER_nondet_int() [L154] method_id = 5 [L156] COND TRUE (this_state == 3) [L391] CALL reach_error() [L4] __assert_fail("0", "psyco_security.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 203 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.8s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 759 SDtfs, 1133 SDslu, 48 SDs, 0 SdLazy, 1961 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred 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: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 38 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...