/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:11:18,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:11:18,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:11:18,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 03:11:18,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:11:18,939 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:11:18,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:11:18,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:11:18,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:11:18,947 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:11:18,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:11:18,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:11:18,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:11:18,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:11:18,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:11:18,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:11:18,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:11:18,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:11:18,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:11:18,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:11:18,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:11:18,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:11:18,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:11:18,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:11:18,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:11:18,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:11:18,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:11:18,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:11:18,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:11:18,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:11:18,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:11:19,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:11:19,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:11:19,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:11:19,578 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:11:19,579 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:11:19,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_io_1.c [2020-12-22 03:11:19,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc498fe83/700fa829f79b409ea6955c86d2940327/FLAG43543858f [2020-12-22 03:11:20,550 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:11:20,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_io_1.c [2020-12-22 03:11:20,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc498fe83/700fa829f79b409ea6955c86d2940327/FLAG43543858f [2020-12-22 03:11:20,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc498fe83/700fa829f79b409ea6955c86d2940327 [2020-12-22 03:11:20,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:11:20,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:11:20,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:11:20,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:11:20,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:11:20,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:11:20" (1/1) ... [2020-12-22 03:11:20,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f977b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:20, skipping insertion in model container [2020-12-22 03:11:20,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:11:20" (1/1) ... [2020-12-22 03:11:20,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:11:20,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:11:21,307 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_io_1.c[11478,11491] [2020-12-22 03:11:21,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:11:21,350 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:11:21,449 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_io_1.c[11478,11491] [2020-12-22 03:11:21,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:11:21,479 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:11:21,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:21 WrapperNode [2020-12-22 03:11:21,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:11:21,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:11:21,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:11:21,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:11:21,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:21" (1/1) ... [2020-12-22 03:11:21,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:21" (1/1) ... [2020-12-22 03:11:21,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:11:21,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:11:21,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:11:21,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:11:21,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:21" (1/1) ... [2020-12-22 03:11:21,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:21" (1/1) ... [2020-12-22 03:11:21,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:21" (1/1) ... [2020-12-22 03:11:21,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:21" (1/1) ... [2020-12-22 03:11:21,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:21" (1/1) ... [2020-12-22 03:11:21,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:21" (1/1) ... [2020-12-22 03:11:21,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:21" (1/1) ... [2020-12-22 03:11:21,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:11:21,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:11:21,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:11:21,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:11:21,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:21" (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 [2020-12-22 03:11:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:11:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:11:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:11:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:11:22,499 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:11:22,499 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 03:11:22,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:11:22 BoogieIcfgContainer [2020-12-22 03:11:22,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:11:22,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:11:22,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:11:22,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:11:22,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:11:20" (1/3) ... [2020-12-22 03:11:22,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d7af26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:11:22, skipping insertion in model container [2020-12-22 03:11:22,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:21" (2/3) ... [2020-12-22 03:11:22,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d7af26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:11:22, skipping insertion in model container [2020-12-22 03:11:22,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:11:22" (3/3) ... [2020-12-22 03:11:22,528 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-12-22 03:11:22,542 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:11:22,550 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:11:22,583 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:11:22,643 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:11:22,643 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:11:22,643 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:11:22,644 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:11:22,644 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:11:22,644 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:11:22,644 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:11:22,644 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:11:22,672 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-12-22 03:11:22,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 03:11:22,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:22,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:22,683 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:22,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:22,695 INFO L82 PathProgramCache]: Analyzing trace with hash 352571312, now seen corresponding path program 1 times [2020-12-22 03:11:22,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:22,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477726684] [2020-12-22 03:11:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:11:23,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477726684] [2020-12-22 03:11:23,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:11:23,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:11:23,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144676352] [2020-12-22 03:11:23,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:11:23,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:23,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:11:23,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:11:23,145 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 2 states. [2020-12-22 03:11:23,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:23,195 INFO L93 Difference]: Finished difference Result 130 states and 244 transitions. [2020-12-22 03:11:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:11:23,197 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-22 03:11:23,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:23,231 INFO L225 Difference]: With dead ends: 130 [2020-12-22 03:11:23,232 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 03:11:23,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:11:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 03:11:23,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-22 03:11:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-22 03:11:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 87 transitions. [2020-12-22 03:11:23,317 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 87 transitions. Word has length 9 [2020-12-22 03:11:23,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:23,318 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 87 transitions. [2020-12-22 03:11:23,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:11:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 87 transitions. [2020-12-22 03:11:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 03:11:23,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:23,322 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:23,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:11:23,324 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:23,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:23,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697760, now seen corresponding path program 1 times [2020-12-22 03:11:23,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:23,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053548243] [2020-12-22 03:11:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:11:23,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053548243] [2020-12-22 03:11:23,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:11:23,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:11:23,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550971636] [2020-12-22 03:11:23,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:11:23,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:23,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:11:23,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:23,487 INFO L87 Difference]: Start difference. First operand 57 states and 87 transitions. Second operand 3 states. [2020-12-22 03:11:23,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:23,543 INFO L93 Difference]: Finished difference Result 115 states and 176 transitions. [2020-12-22 03:11:23,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:11:23,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-22 03:11:23,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:23,546 INFO L225 Difference]: With dead ends: 115 [2020-12-22 03:11:23,546 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 03:11:23,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:23,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 03:11:23,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-12-22 03:11:23,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-22 03:11:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 90 transitions. [2020-12-22 03:11:23,557 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 90 transitions. Word has length 10 [2020-12-22 03:11:23,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:23,558 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 90 transitions. [2020-12-22 03:11:23,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:11:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 90 transitions. [2020-12-22 03:11:23,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:11:23,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:23,559 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:23,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:11:23,560 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:23,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:23,561 INFO L82 PathProgramCache]: Analyzing trace with hash 658032531, now seen corresponding path program 1 times [2020-12-22 03:11:23,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:23,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854135546] [2020-12-22 03:11:23,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:11:23,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854135546] [2020-12-22 03:11:23,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:11:23,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:11:23,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804378640] [2020-12-22 03:11:23,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:11:23,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:23,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:11:23,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:23,644 INFO L87 Difference]: Start difference. First operand 60 states and 90 transitions. Second operand 3 states. [2020-12-22 03:11:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:23,742 INFO L93 Difference]: Finished difference Result 123 states and 185 transitions. [2020-12-22 03:11:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:11:23,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-22 03:11:23,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:23,745 INFO L225 Difference]: With dead ends: 123 [2020-12-22 03:11:23,745 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 03:11:23,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:23,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 03:11:23,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-12-22 03:11:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 03:11:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2020-12-22 03:11:23,756 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 15 [2020-12-22 03:11:23,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:23,757 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2020-12-22 03:11:23,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:11:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2020-12-22 03:11:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 03:11:23,758 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:23,758 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:23,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 03:11:23,759 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:23,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:23,760 INFO L82 PathProgramCache]: Analyzing trace with hash 2017993163, now seen corresponding path program 1 times [2020-12-22 03:11:23,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:23,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082608319] [2020-12-22 03:11:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:11:23,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082608319] [2020-12-22 03:11:23,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:11:23,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:11:23,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789184362] [2020-12-22 03:11:23,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:11:23,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:23,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:11:23,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:23,839 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand 3 states. [2020-12-22 03:11:23,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:23,976 INFO L93 Difference]: Finished difference Result 182 states and 272 transitions. [2020-12-22 03:11:23,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:11:23,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-22 03:11:23,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:23,984 INFO L225 Difference]: With dead ends: 182 [2020-12-22 03:11:23,984 INFO L226 Difference]: Without dead ends: 117 [2020-12-22 03:11:23,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:23,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-22 03:11:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2020-12-22 03:11:24,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 03:11:24,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 160 transitions. [2020-12-22 03:11:24,016 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 160 transitions. Word has length 20 [2020-12-22 03:11:24,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:24,017 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 160 transitions. [2020-12-22 03:11:24,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:11:24,019 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 160 transitions. [2020-12-22 03:11:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 03:11:24,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:24,021 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:11:24,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 03:11:24,021 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:24,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:24,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1713693363, now seen corresponding path program 1 times [2020-12-22 03:11:24,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:24,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659769306] [2020-12-22 03:11:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:24,105 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 03:11:24,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659769306] [2020-12-22 03:11:24,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:11:24,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 03:11:24,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468951560] [2020-12-22 03:11:24,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 03:11:24,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:24,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 03:11:24,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:24,109 INFO L87 Difference]: Start difference. First operand 108 states and 160 transitions. Second operand 3 states. [2020-12-22 03:11:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:24,149 INFO L93 Difference]: Finished difference Result 178 states and 264 transitions. [2020-12-22 03:11:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 03:11:24,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 03:11:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:24,151 INFO L225 Difference]: With dead ends: 178 [2020-12-22 03:11:24,152 INFO L226 Difference]: Without dead ends: 73 [2020-12-22 03:11:24,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 03:11:24,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-22 03:11:24,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-12-22 03:11:24,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-22 03:11:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2020-12-22 03:11:24,162 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 27 [2020-12-22 03:11:24,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:24,163 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2020-12-22 03:11:24,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 03:11:24,163 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2020-12-22 03:11:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 03:11:24,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:11:24,165 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 03:11:24,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 03:11:24,165 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:11:24,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:11:24,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1521721792, now seen corresponding path program 1 times [2020-12-22 03:11:24,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:11:24,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39485804] [2020-12-22 03:11:24,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:11:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:11:24,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 03:11:24,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39485804] [2020-12-22 03:11:24,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:11:24,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:11:24,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701532789] [2020-12-22 03:11:24,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:11:24,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:11:24,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:11:24,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:11:24,314 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand 4 states. [2020-12-22 03:11:24,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:11:24,421 INFO L93 Difference]: Finished difference Result 76 states and 104 transitions. [2020-12-22 03:11:24,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 03:11:24,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 03:11:24,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:11:24,423 INFO L225 Difference]: With dead ends: 76 [2020-12-22 03:11:24,423 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 03:11:24,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:11:24,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 03:11:24,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 03:11:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 03:11:24,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 03:11:24,429 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-12-22 03:11:24,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:11:24,430 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 03:11:24,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:11:24,430 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 03:11:24,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 03:11:24,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 03:11:24,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 03:11:24,510 INFO L189 CegarLoopUtils]: For program point L36(lines 36 51) no Hoare annotation was computed. [2020-12-22 03:11:24,511 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 03:11:24,512 INFO L189 CegarLoopUtils]: For program point L38(lines 38 49) no Hoare annotation was computed. [2020-12-22 03:11:24,512 INFO L189 CegarLoopUtils]: For program point L88(lines 88 103) no Hoare annotation was computed. [2020-12-22 03:11:24,515 INFO L189 CegarLoopUtils]: For program point L55(lines 55 106) no Hoare annotation was computed. [2020-12-22 03:11:24,515 INFO L189 CegarLoopUtils]: For program point L204(lines 204 219) no Hoare annotation was computed. [2020-12-22 03:11:24,515 INFO L189 CegarLoopUtils]: For program point L72(lines 72 87) no Hoare annotation was computed. [2020-12-22 03:11:24,515 INFO L189 CegarLoopUtils]: For program point L320(lines 320 335) no Hoare annotation was computed. [2020-12-22 03:11:24,515 INFO L189 CegarLoopUtils]: For program point L188(lines 188 203) no Hoare annotation was computed. [2020-12-22 03:11:24,516 INFO L189 CegarLoopUtils]: For program point L56(lines 56 71) no Hoare annotation was computed. [2020-12-22 03:11:24,521 INFO L185 CegarLoopUtils]: At program point L337(lines 25 341) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_sink~0 0))) (or (= ULTIMATE.start_main_~q~0 0) (and (<= 3 ULTIMATE.start_main_~q~0) (not .cse0)) (and (= ULTIMATE.start_main_~q~0 2) .cse0))) [2020-12-22 03:11:24,521 INFO L189 CegarLoopUtils]: For program point L304(lines 304 319) no Hoare annotation was computed. [2020-12-22 03:11:24,522 INFO L189 CegarLoopUtils]: For program point L172(lines 172 187) no Hoare annotation was computed. [2020-12-22 03:11:24,522 INFO L189 CegarLoopUtils]: For program point L288(lines 288 303) no Hoare annotation was computed. [2020-12-22 03:11:24,522 INFO L189 CegarLoopUtils]: For program point L156(lines 156 171) no Hoare annotation was computed. [2020-12-22 03:11:24,522 INFO L189 CegarLoopUtils]: For program point L90(lines 90 101) no Hoare annotation was computed. [2020-12-22 03:11:24,522 INFO L189 CegarLoopUtils]: For program point L272(lines 272 287) no Hoare annotation was computed. [2020-12-22 03:11:24,522 INFO L189 CegarLoopUtils]: For program point L206(lines 206 217) no Hoare annotation was computed. [2020-12-22 03:11:24,523 INFO L189 CegarLoopUtils]: For program point L140(lines 140 155) no Hoare annotation was computed. [2020-12-22 03:11:24,523 INFO L189 CegarLoopUtils]: For program point L107(lines 107 222) no Hoare annotation was computed. [2020-12-22 03:11:24,523 INFO L189 CegarLoopUtils]: For program point L74(lines 74 85) no Hoare annotation was computed. [2020-12-22 03:11:24,523 INFO L189 CegarLoopUtils]: For program point L322(lines 322 333) no Hoare annotation was computed. [2020-12-22 03:11:24,523 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 03:11:24,523 INFO L189 CegarLoopUtils]: For program point L256(lines 256 271) no Hoare annotation was computed. [2020-12-22 03:11:24,524 INFO L189 CegarLoopUtils]: For program point L223(lines 223 338) no Hoare annotation was computed. [2020-12-22 03:11:24,524 INFO L189 CegarLoopUtils]: For program point L190(lines 190 201) no Hoare annotation was computed. [2020-12-22 03:11:24,524 INFO L189 CegarLoopUtils]: For program point L124(lines 124 139) no Hoare annotation was computed. [2020-12-22 03:11:24,524 INFO L189 CegarLoopUtils]: For program point L58(lines 58 69) no Hoare annotation was computed. [2020-12-22 03:11:24,524 INFO L185 CegarLoopUtils]: At program point L25-2(lines 25 341) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_sink~0 0))) (or (and (= ULTIMATE.start_main_~q~0 0) .cse0) (and (<= 3 ULTIMATE.start_main_~q~0) (not .cse0)))) [2020-12-22 03:11:24,525 INFO L189 CegarLoopUtils]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2020-12-22 03:11:24,525 INFO L189 CegarLoopUtils]: For program point L306(lines 306 317) no Hoare annotation was computed. [2020-12-22 03:11:24,525 INFO L189 CegarLoopUtils]: For program point L240(lines 240 255) no Hoare annotation was computed. [2020-12-22 03:11:24,526 INFO L189 CegarLoopUtils]: For program point L174(lines 174 185) no Hoare annotation was computed. [2020-12-22 03:11:24,526 INFO L189 CegarLoopUtils]: For program point L108(lines 108 123) no Hoare annotation was computed. [2020-12-22 03:11:24,526 INFO L189 CegarLoopUtils]: For program point L42(lines 42 44) no Hoare annotation was computed. [2020-12-22 03:11:24,526 INFO L189 CegarLoopUtils]: For program point L290(lines 290 301) no Hoare annotation was computed. [2020-12-22 03:11:24,527 INFO L189 CegarLoopUtils]: For program point L224(lines 224 239) no Hoare annotation was computed. [2020-12-22 03:11:24,528 INFO L189 CegarLoopUtils]: For program point L158(lines 158 169) no Hoare annotation was computed. [2020-12-22 03:11:24,529 INFO L189 CegarLoopUtils]: For program point L274(lines 274 285) no Hoare annotation was computed. [2020-12-22 03:11:24,530 INFO L189 CegarLoopUtils]: For program point L142(lines 142 153) no Hoare annotation was computed. [2020-12-22 03:11:24,530 INFO L189 CegarLoopUtils]: For program point L258(lines 258 269) no Hoare annotation was computed. [2020-12-22 03:11:24,530 INFO L189 CegarLoopUtils]: For program point L126(lines 126 137) no Hoare annotation was computed. [2020-12-22 03:11:24,530 INFO L189 CegarLoopUtils]: For program point L242(lines 242 253) no Hoare annotation was computed. [2020-12-22 03:11:24,530 INFO L189 CegarLoopUtils]: For program point L110(lines 110 121) no Hoare annotation was computed. [2020-12-22 03:11:24,530 INFO L189 CegarLoopUtils]: For program point L226(lines 226 237) no Hoare annotation was computed. [2020-12-22 03:11:24,531 INFO L189 CegarLoopUtils]: For program point L94(lines 94 96) no Hoare annotation was computed. [2020-12-22 03:11:24,531 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 03:11:24,531 INFO L189 CegarLoopUtils]: For program point L210(lines 210 212) no Hoare annotation was computed. [2020-12-22 03:11:24,531 INFO L189 CegarLoopUtils]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-12-22 03:11:24,531 INFO L189 CegarLoopUtils]: For program point L326(lines 326 328) no Hoare annotation was computed. [2020-12-22 03:11:24,531 INFO L189 CegarLoopUtils]: For program point L194(lines 194 196) no Hoare annotation was computed. [2020-12-22 03:11:24,531 INFO L189 CegarLoopUtils]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-12-22 03:11:24,532 INFO L189 CegarLoopUtils]: For program point L310(lines 310 312) no Hoare annotation was computed. [2020-12-22 03:11:24,532 INFO L189 CegarLoopUtils]: For program point L178(lines 178 180) no Hoare annotation was computed. [2020-12-22 03:11:24,532 INFO L185 CegarLoopUtils]: At program point L327(lines 15 346) the Hoare annotation is: false [2020-12-22 03:11:24,533 INFO L189 CegarLoopUtils]: For program point L294(lines 294 296) no Hoare annotation was computed. [2020-12-22 03:11:24,533 INFO L189 CegarLoopUtils]: For program point L162(lines 162 164) no Hoare annotation was computed. [2020-12-22 03:11:24,533 INFO L189 CegarLoopUtils]: For program point L278(lines 278 280) no Hoare annotation was computed. [2020-12-22 03:11:24,533 INFO L189 CegarLoopUtils]: For program point L146(lines 146 148) no Hoare annotation was computed. [2020-12-22 03:11:24,533 INFO L189 CegarLoopUtils]: For program point L262(lines 262 264) no Hoare annotation was computed. [2020-12-22 03:11:24,534 INFO L189 CegarLoopUtils]: For program point L130(lines 130 132) no Hoare annotation was computed. [2020-12-22 03:11:24,535 INFO L189 CegarLoopUtils]: For program point L246(lines 246 248) no Hoare annotation was computed. [2020-12-22 03:11:24,535 INFO L189 CegarLoopUtils]: For program point L114(lines 114 116) no Hoare annotation was computed. [2020-12-22 03:11:24,535 INFO L192 CegarLoopUtils]: At program point L15(lines 15 346) the Hoare annotation is: true [2020-12-22 03:11:24,535 INFO L189 CegarLoopUtils]: For program point L230(lines 230 232) no Hoare annotation was computed. [2020-12-22 03:11:24,535 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 03:11:24,535 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 345) no Hoare annotation was computed. [2020-12-22 03:11:24,535 INFO L189 CegarLoopUtils]: For program point L35(lines 35 54) no Hoare annotation was computed. [2020-12-22 03:11:24,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:11:24 BoogieIcfgContainer [2020-12-22 03:11:24,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:11:24,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:11:24,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:11:24,567 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:11:24,568 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:11:22" (3/4) ... [2020-12-22 03:11:24,573 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 03:11:24,604 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-22 03:11:24,604 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 03:11:24,604 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 03:11:24,605 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 03:11:24,648 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/psyco/psyco_io_1.c-witness.graphml [2020-12-22 03:11:24,648 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:11:24,651 INFO L168 Benchmark]: Toolchain (without parser) took 3804.17 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 118.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:24,652 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 122.3 MB in the beginning and 122.2 MB in the end (delta: 95.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:11:24,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.52 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 115.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:24,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.19 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:24,655 INFO L168 Benchmark]: Boogie Preprocessor took 41.79 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 111.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:24,656 INFO L168 Benchmark]: RCFGBuilder took 907.83 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 118.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:24,657 INFO L168 Benchmark]: TraceAbstraction took 2056.76 ms. Allocated memory is still 151.0 MB. Free memory was 118.0 MB in the beginning and 120.6 MB in the end (delta: -2.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:11:24,658 INFO L168 Benchmark]: Witness Printer took 81.77 ms. Allocated memory is still 151.0 MB. Free memory was 120.6 MB in the beginning and 118.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:11:24,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 122.3 MB in the beginning and 122.2 MB in the end (delta: 95.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 630.52 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 115.2 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 70.19 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.79 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 111.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 907.83 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 118.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2056.76 ms. Allocated memory is still 151.0 MB. Free memory was 118.0 MB in the beginning and 120.6 MB in the end (delta: -2.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 81.77 ms. Allocated memory is still 151.0 MB. Free memory was 120.6 MB in the beginning and 118.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 345]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && !(this_sink == 0)) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 || (3 <= q && !(this_sink == 0))) || (q == 2 && this_sink == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 515 SDtfs, 140 SDslu, 283 SDs, 0 SdLazy, 83 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, 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, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 37 HoareAnnotationTreeSize, 4 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4362 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...