/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-b8ad66e [2020-10-23 21:41:24,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 21:41:24,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 21:41:24,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 21:41:24,202 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 21:41:24,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 21:41:24,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 21:41:24,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 21:41:24,227 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 21:41:24,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 21:41:24,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 21:41:24,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 21:41:24,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 21:41:24,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 21:41:24,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 21:41:24,229 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 21:41:24,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 21:41:24,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 21:41:24,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 21:41:24,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 21:41:24,231 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 21:41:24,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 21:41:24,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 21:41:24,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 21:41:24,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 21:41:24,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 21:41:24,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 21:41:24,232 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 21:41:24,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 21:41:24,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 21:41:24,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 21:41:24,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 21:41:24,657 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 21:41:24,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-10-23 21:41:24,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a01da622/5f6e0cef6ad642f88d2c1f38ca5f755b/FLAG240f989cd [2020-10-23 21:41:25,300 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 21:41:25,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_security.c [2020-10-23 21:41:25,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a01da622/5f6e0cef6ad642f88d2c1f38ca5f755b/FLAG240f989cd [2020-10-23 21:41:25,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a01da622/5f6e0cef6ad642f88d2c1f38ca5f755b [2020-10-23 21:41:25,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 21:41:25,660 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 21:41:25,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 21:41:25,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 21:41:25,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 21:41:25,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:41:25" (1/1) ... [2020-10-23 21:41:25,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e3368ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:25, skipping insertion in model container [2020-10-23 21:41:25,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:41:25" (1/1) ... [2020-10-23 21:41:25,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 21:41:25,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 21:41:26,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:41:26,046 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 21:41:26,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 21:41:26,119 INFO L208 MainTranslator]: Completed translation [2020-10-23 21:41:26,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:26 WrapperNode [2020-10-23 21:41:26,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 21:41:26,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 21:41:26,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 21:41:26,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 21:41:26,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:26" (1/1) ... [2020-10-23 21:41:26,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:26" (1/1) ... [2020-10-23 21:41:26,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:26" (1/1) ... [2020-10-23 21:41:26,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:26" (1/1) ... [2020-10-23 21:41:26,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:26" (1/1) ... [2020-10-23 21:41:26,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:26" (1/1) ... [2020-10-23 21:41:26,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:26" (1/1) ... [2020-10-23 21:41:26,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 21:41:26,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 21:41:26,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 21:41:26,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 21:41:26,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:26" (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 21:41:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 21:41:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 21:41:26,299 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 21:41:26,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 21:41:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 21:41:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 21:41:26,300 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 21:41:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 21:41:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 21:41:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 21:41:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 21:41:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 21:41:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 21:41:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 21:41:26,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 21:41:26,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 21:41:27,043 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 21:41:27,043 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-23 21:41:27,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:41:27 BoogieIcfgContainer [2020-10-23 21:41:27,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 21:41:27,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 21:41:27,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 21:41:27,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 21:41:27,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:41:25" (1/3) ... [2020-10-23 21:41:27,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5b5577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:41:27, skipping insertion in model container [2020-10-23 21:41:27,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:41:26" (2/3) ... [2020-10-23 21:41:27,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5b5577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:41:27, skipping insertion in model container [2020-10-23 21:41:27,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:41:27" (3/3) ... [2020-10-23 21:41:27,056 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-10-23 21:41:27,073 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 21:41:27,081 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 21:41:27,115 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 21:41:27,173 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 21:41:27,173 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 21:41:27,173 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 21:41:27,174 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 21:41:27,174 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 21:41:27,177 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 21:41:27,177 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 21:41:27,178 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 21:41:27,228 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2020-10-23 21:41:27,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-23 21:41:27,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:41:27,248 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] [2020-10-23 21:41:27,249 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:41:27,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:41:27,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1657313552, now seen corresponding path program 1 times [2020-10-23 21:41:27,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:41:27,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462304603] [2020-10-23 21:41:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:41:27,359 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:41:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:41:27,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:41:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:41:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:41:27,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462304603] [2020-10-23 21:41:27,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:41:27,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 21:41:27,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940370356] [2020-10-23 21:41:27,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 21:41:27,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:41:27,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 21:41:27,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:41:27,723 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 3 states. [2020-10-23 21:41:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:41:28,062 INFO L93 Difference]: Finished difference Result 382 states and 521 transitions. [2020-10-23 21:41:28,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 21:41:28,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-23 21:41:28,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:41:28,083 INFO L225 Difference]: With dead ends: 382 [2020-10-23 21:41:28,083 INFO L226 Difference]: Without dead ends: 187 [2020-10-23 21:41:28,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 21:41:28,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-23 21:41:28,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-10-23 21:41:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-23 21:41:28,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 222 transitions. [2020-10-23 21:41:28,244 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 222 transitions. Word has length 31 [2020-10-23 21:41:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:41:28,244 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 222 transitions. [2020-10-23 21:41:28,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 21:41:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 222 transitions. [2020-10-23 21:41:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-23 21:41:28,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:41:28,249 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] [2020-10-23 21:41:28,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 21:41:28,250 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:41:28,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:41:28,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1836702352, now seen corresponding path program 1 times [2020-10-23 21:41:28,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:41:28,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078842264] [2020-10-23 21:41:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:41:28,265 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 21:41:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:41:28,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 21:41:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 21:41:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 21:41:28,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078842264] [2020-10-23 21:41:28,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 21:41:28,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 21:41:28,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377200151] [2020-10-23 21:41:28,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 21:41:28,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 21:41:28,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 21:41:28,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 21:41:28,453 INFO L87 Difference]: Start difference. First operand 187 states and 222 transitions. Second operand 4 states. [2020-10-23 21:41:29,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 21:41:29,054 INFO L93 Difference]: Finished difference Result 356 states and 427 transitions. [2020-10-23 21:41:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 21:41:29,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-23 21:41:29,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 21:41:29,057 INFO L225 Difference]: With dead ends: 356 [2020-10-23 21:41:29,057 INFO L226 Difference]: Without dead ends: 190 [2020-10-23 21:41:29,060 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 [2020-10-23 21:41:29,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-23 21:41:29,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-10-23 21:41:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-23 21:41:29,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions. [2020-10-23 21:41:29,105 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 32 [2020-10-23 21:41:29,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 21:41:29,106 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 225 transitions. [2020-10-23 21:41:29,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 21:41:29,106 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions. [2020-10-23 21:41:29,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 21:41:29,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 21:41:29,108 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] [2020-10-23 21:41:29,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 21:41:29,108 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 21:41:29,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 21:41:29,109 INFO L82 PathProgramCache]: Analyzing trace with hash 284979922, now seen corresponding path program 1 times [2020-10-23 21:41:29,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 21:41:29,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576927534] [2020-10-23 21:41:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 21:41:29,320 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 21:41:29,382 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 21:41:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:41:29,418 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:41:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 21:41:29,468 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 21:41:29,504 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 21:41:29,504 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 21:41:29,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 21:41:29,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:41:29 BoogieIcfgContainer [2020-10-23 21:41:29,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 21:41:29,527 INFO L168 Benchmark]: Toolchain (without parser) took 3872.08 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 133.2 MB in the beginning and 164.2 MB in the end (delta: -31.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 21:41:29,528 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 98.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:41:29,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.13 ms. Allocated memory is still 156.2 MB. Free memory was 132.6 MB in the beginning and 121.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-23 21:41:29,530 INFO L168 Benchmark]: Boogie Preprocessor took 69.29 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 118.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 21:41:29,531 INFO L168 Benchmark]: RCFGBuilder took 854.98 ms. Allocated memory is still 156.2 MB. Free memory was 118.8 MB in the beginning and 107.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. [2020-10-23 21:41:29,532 INFO L168 Benchmark]: TraceAbstraction took 2476.24 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 107.5 MB in the beginning and 164.2 MB in the end (delta: -56.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 21:41:29,535 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 98.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 455.13 ms. Allocated memory is still 156.2 MB. Free memory was 132.6 MB in the beginning and 121.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.29 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 118.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 854.98 ms. Allocated memory is still 156.2 MB. Free memory was 118.8 MB in the beginning and 107.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2476.24 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 107.5 MB in the beginning and 164.2 MB in the end (delta: -56.8 MB). There was no memory consumed. 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 TRUE q == 1 [L50] COND TRUE __VERIFIER_nondet_int() [L54] method_id = 4 [L56] COND TRUE (this_state == 2) [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: 2.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 463 SDtfs, 435 SDslu, 26 SDs, 0 SdLazy, 220 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 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...