/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/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 01:42:39,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 01:42:39,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 01:42:39,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 01:42:39,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 01:42:39,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 01:42:39,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 01:42:39,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 01:42:39,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 01:42:39,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 01:42:39,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 01:42:39,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 01:42:39,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 01:42:39,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 01:42:39,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 01:42:39,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 01:42:39,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 01:42:39,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 01:42:39,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 01:42:39,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 01:42:39,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 01:42:39,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 01:42:39,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 01:42:39,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 01:42:39,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 01:42:39,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 01:42:39,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 01:42:39,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 01:42:39,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 01:42:39,267 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 01:42:39,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 01:42:39,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 01:42:39,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 01:42:39,272 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 01:42:39,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 01:42:39,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 01:42:39,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 01:42:39,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 01:42:39,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 01:42:39,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 01:42:39,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 01:42:39,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 01:42:39,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 01:42:39,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 01:42:39,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 01:42:39,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 01:42:39,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 01:42:39,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 01:42:39,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 01:42:39,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 01:42:39,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 01:42:39,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 01:42:39,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 01:42:39,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 01:42:39,277 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 01:42:39,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 01:42:39,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 01:42:39,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 01:42:39,720 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 01:42:39,721 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 01:42:39,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_5.c [2020-12-23 01:42:39,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f3cfa23b4/3d890adeefd74b8895b67fed65fc68ed/FLAG8fa50c90b [2020-12-23 01:42:40,427 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 01:42:40,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c [2020-12-23 01:42:40,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f3cfa23b4/3d890adeefd74b8895b67fed65fc68ed/FLAG8fa50c90b [2020-12-23 01:42:40,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f3cfa23b4/3d890adeefd74b8895b67fed65fc68ed [2020-12-23 01:42:40,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 01:42:40,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 01:42:40,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 01:42:40,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 01:42:40,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 01:42:40,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:40" (1/1) ... [2020-12-23 01:42:40,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4964f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:40, skipping insertion in model container [2020-12-23 01:42:40,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:42:40" (1/1) ... [2020-12-23 01:42:40,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 01:42:40,861 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] [2020-12-23 01:42:41,011 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2020-12-23 01:42:41,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:42:41,025 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] [2020-12-23 01:42:41,048 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2020-12-23 01:42:41,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 01:42:41,064 INFO L208 MainTranslator]: Completed translation [2020-12-23 01:42:41,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:41 WrapperNode [2020-12-23 01:42:41,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 01:42:41,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 01:42:41,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 01:42:41,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 01:42:41,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:41" (1/1) ... [2020-12-23 01:42:41,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:41" (1/1) ... [2020-12-23 01:42:41,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 01:42:41,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 01:42:41,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 01:42:41,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 01:42:41,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:41" (1/1) ... [2020-12-23 01:42:41,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:41" (1/1) ... [2020-12-23 01:42:41,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:41" (1/1) ... [2020-12-23 01:42:41,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:41" (1/1) ... [2020-12-23 01:42:41,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:41" (1/1) ... [2020-12-23 01:42:41,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:41" (1/1) ... [2020-12-23 01:42:41,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:41" (1/1) ... [2020-12-23 01:42:41,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 01:42:41,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 01:42:41,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 01:42:41,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 01:42:41,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 01:42:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 01:42:41,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 01:42:41,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 01:42:41,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 01:42:41,571 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 01:42:41,574 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-23 01:42:41,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:41 BoogieIcfgContainer [2020-12-23 01:42:41,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 01:42:41,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 01:42:41,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 01:42:41,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 01:42:41,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:42:40" (1/3) ... [2020-12-23 01:42:41,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26538ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:41, skipping insertion in model container [2020-12-23 01:42:41,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:42:41" (2/3) ... [2020-12-23 01:42:41,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26538ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:42:41, skipping insertion in model container [2020-12-23 01:42:41,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:41" (3/3) ... [2020-12-23 01:42:41,598 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-12-23 01:42:41,607 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 01:42:41,627 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 01:42:41,652 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 01:42:41,680 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 01:42:41,681 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 01:42:41,681 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 01:42:41,681 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 01:42:41,681 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 01:42:41,681 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 01:42:41,682 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 01:42:41,682 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 01:42:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-23 01:42:41,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 01:42:41,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:41,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:41,707 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:41,715 INFO L82 PathProgramCache]: Analyzing trace with hash -161811697, now seen corresponding path program 1 times [2020-12-23 01:42:41,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:41,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971248181] [2020-12-23 01:42:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:41,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971248181] [2020-12-23 01:42:41,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:41,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:41,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393563796] [2020-12-23 01:42:41,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:41,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:41,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:41,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:41,966 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-12-23 01:42:42,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:42,018 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2020-12-23 01:42:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:42,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-23 01:42:42,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:42,051 INFO L225 Difference]: With dead ends: 53 [2020-12-23 01:42:42,052 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 01:42:42,056 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 [2020-12-23 01:42:42,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 01:42:42,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2020-12-23 01:42:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 01:42:42,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 46 transitions. [2020-12-23 01:42:42,108 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 46 transitions. Word has length 12 [2020-12-23 01:42:42,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:42,109 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 46 transitions. [2020-12-23 01:42:42,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 46 transitions. [2020-12-23 01:42:42,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 01:42:42,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:42,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:42,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 01:42:42,114 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:42,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:42,118 INFO L82 PathProgramCache]: Analyzing trace with hash -971158323, now seen corresponding path program 1 times [2020-12-23 01:42:42,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:42,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525715580] [2020-12-23 01:42:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:42,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525715580] [2020-12-23 01:42:42,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:42,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:42,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330654898] [2020-12-23 01:42:42,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:42,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:42,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:42,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:42,244 INFO L87 Difference]: Start difference. First operand 27 states and 46 transitions. Second operand 3 states. [2020-12-23 01:42:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:42,295 INFO L93 Difference]: Finished difference Result 64 states and 109 transitions. [2020-12-23 01:42:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:42,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-23 01:42:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:42,299 INFO L225 Difference]: With dead ends: 64 [2020-12-23 01:42:42,299 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 01:42:42,300 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 [2020-12-23 01:42:42,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 01:42:42,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-12-23 01:42:42,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 01:42:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 62 transitions. [2020-12-23 01:42:42,316 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 62 transitions. Word has length 12 [2020-12-23 01:42:42,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:42,316 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 62 transitions. [2020-12-23 01:42:42,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:42,317 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 62 transitions. [2020-12-23 01:42:42,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 01:42:42,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:42,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:42,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 01:42:42,320 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:42,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:42,321 INFO L82 PathProgramCache]: Analyzing trace with hash -720980343, now seen corresponding path program 1 times [2020-12-23 01:42:42,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:42,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93245425] [2020-12-23 01:42:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:42,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93245425] [2020-12-23 01:42:42,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:42,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:42,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174135202] [2020-12-23 01:42:42,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:42,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:42,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:42,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:42,409 INFO L87 Difference]: Start difference. First operand 37 states and 62 transitions. Second operand 3 states. [2020-12-23 01:42:42,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:42,441 INFO L93 Difference]: Finished difference Result 60 states and 96 transitions. [2020-12-23 01:42:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:42,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-23 01:42:42,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:42,443 INFO L225 Difference]: With dead ends: 60 [2020-12-23 01:42:42,443 INFO L226 Difference]: Without dead ends: 42 [2020-12-23 01:42:42,444 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 [2020-12-23 01:42:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-23 01:42:42,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-12-23 01:42:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-23 01:42:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 64 transitions. [2020-12-23 01:42:42,450 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 64 transitions. Word has length 13 [2020-12-23 01:42:42,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:42,451 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 64 transitions. [2020-12-23 01:42:42,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:42,451 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 64 transitions. [2020-12-23 01:42:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 01:42:42,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:42,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:42,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 01:42:42,453 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:42,453 INFO L82 PathProgramCache]: Analyzing trace with hash -40921973, now seen corresponding path program 1 times [2020-12-23 01:42:42,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:42,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222114006] [2020-12-23 01:42:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:42,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222114006] [2020-12-23 01:42:42,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:42,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:42,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329948230] [2020-12-23 01:42:42,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:42,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:42,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:42,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:42,493 INFO L87 Difference]: Start difference. First operand 40 states and 64 transitions. Second operand 3 states. [2020-12-23 01:42:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:42,513 INFO L93 Difference]: Finished difference Result 73 states and 117 transitions. [2020-12-23 01:42:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:42,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-23 01:42:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:42,515 INFO L225 Difference]: With dead ends: 73 [2020-12-23 01:42:42,515 INFO L226 Difference]: Without dead ends: 71 [2020-12-23 01:42:42,516 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 [2020-12-23 01:42:42,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-23 01:42:42,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2020-12-23 01:42:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-23 01:42:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 85 transitions. [2020-12-23 01:42:42,525 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 85 transitions. Word has length 13 [2020-12-23 01:42:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:42,525 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 85 transitions. [2020-12-23 01:42:42,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 85 transitions. [2020-12-23 01:42:42,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 01:42:42,526 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:42,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:42,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 01:42:42,527 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:42,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:42,527 INFO L82 PathProgramCache]: Analyzing trace with hash -850268599, now seen corresponding path program 1 times [2020-12-23 01:42:42,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:42,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048635567] [2020-12-23 01:42:42,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:42,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048635567] [2020-12-23 01:42:42,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:42,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:42,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138377451] [2020-12-23 01:42:42,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:42,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:42,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:42,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:42,580 INFO L87 Difference]: Start difference. First operand 53 states and 85 transitions. Second operand 3 states. [2020-12-23 01:42:42,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:42,624 INFO L93 Difference]: Finished difference Result 121 states and 195 transitions. [2020-12-23 01:42:42,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:42,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-23 01:42:42,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:42,629 INFO L225 Difference]: With dead ends: 121 [2020-12-23 01:42:42,629 INFO L226 Difference]: Without dead ends: 73 [2020-12-23 01:42:42,630 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 [2020-12-23 01:42:42,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-23 01:42:42,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-12-23 01:42:42,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-23 01:42:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 111 transitions. [2020-12-23 01:42:42,647 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 111 transitions. Word has length 13 [2020-12-23 01:42:42,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:42,648 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 111 transitions. [2020-12-23 01:42:42,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 111 transitions. [2020-12-23 01:42:42,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:42:42,652 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:42,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:42,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 01:42:42,652 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:42,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:42,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1268365854, now seen corresponding path program 1 times [2020-12-23 01:42:42,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:42,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774230163] [2020-12-23 01:42:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:42,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774230163] [2020-12-23 01:42:42,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:42,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:42,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474696339] [2020-12-23 01:42:42,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:42,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:42,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:42,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:42,727 INFO L87 Difference]: Start difference. First operand 71 states and 111 transitions. Second operand 3 states. [2020-12-23 01:42:42,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:42,751 INFO L93 Difference]: Finished difference Result 108 states and 166 transitions. [2020-12-23 01:42:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:42,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-23 01:42:42,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:42,752 INFO L225 Difference]: With dead ends: 108 [2020-12-23 01:42:42,753 INFO L226 Difference]: Without dead ends: 75 [2020-12-23 01:42:42,754 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 [2020-12-23 01:42:42,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-23 01:42:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2020-12-23 01:42:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-23 01:42:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2020-12-23 01:42:42,773 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 14 [2020-12-23 01:42:42,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:42,779 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2020-12-23 01:42:42,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:42,780 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2020-12-23 01:42:42,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:42:42,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:42,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:42,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 01:42:42,781 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:42,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:42,784 INFO L82 PathProgramCache]: Analyzing trace with hash -588307484, now seen corresponding path program 1 times [2020-12-23 01:42:42,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:42,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382701180] [2020-12-23 01:42:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:42,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382701180] [2020-12-23 01:42:42,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:42,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:42,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191280088] [2020-12-23 01:42:42,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:42,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:42,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:42,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:42,840 INFO L87 Difference]: Start difference. First operand 73 states and 111 transitions. Second operand 3 states. [2020-12-23 01:42:42,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:42,859 INFO L93 Difference]: Finished difference Result 201 states and 305 transitions. [2020-12-23 01:42:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:42,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-23 01:42:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:42,861 INFO L225 Difference]: With dead ends: 201 [2020-12-23 01:42:42,861 INFO L226 Difference]: Without dead ends: 135 [2020-12-23 01:42:42,862 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 [2020-12-23 01:42:42,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-23 01:42:42,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2020-12-23 01:42:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-23 01:42:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 195 transitions. [2020-12-23 01:42:42,874 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 195 transitions. Word has length 14 [2020-12-23 01:42:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:42,874 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 195 transitions. [2020-12-23 01:42:42,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:42,874 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 195 transitions. [2020-12-23 01:42:42,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 01:42:42,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:42,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:42,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 01:42:42,876 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:42,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:42,877 INFO L82 PathProgramCache]: Analyzing trace with hash 221039142, now seen corresponding path program 1 times [2020-12-23 01:42:42,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:42,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168939174] [2020-12-23 01:42:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:42,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168939174] [2020-12-23 01:42:42,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:42,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:42,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597394364] [2020-12-23 01:42:42,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:42,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:42,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:42,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:42,904 INFO L87 Difference]: Start difference. First operand 133 states and 195 transitions. Second operand 3 states. [2020-12-23 01:42:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:42,919 INFO L93 Difference]: Finished difference Result 161 states and 237 transitions. [2020-12-23 01:42:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:42,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-23 01:42:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:42,921 INFO L225 Difference]: With dead ends: 161 [2020-12-23 01:42:42,921 INFO L226 Difference]: Without dead ends: 159 [2020-12-23 01:42:42,923 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 [2020-12-23 01:42:42,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-23 01:42:42,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2020-12-23 01:42:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-23 01:42:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 191 transitions. [2020-12-23 01:42:42,944 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 191 transitions. Word has length 14 [2020-12-23 01:42:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:42,944 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 191 transitions. [2020-12-23 01:42:42,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 191 transitions. [2020-12-23 01:42:42,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 01:42:42,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:42,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:42,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 01:42:42,947 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:42,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:42,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1057447170, now seen corresponding path program 1 times [2020-12-23 01:42:42,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:42,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567534606] [2020-12-23 01:42:42,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:43,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567534606] [2020-12-23 01:42:43,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:43,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:43,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861923034] [2020-12-23 01:42:43,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:43,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:43,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:43,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:43,007 INFO L87 Difference]: Start difference. First operand 133 states and 191 transitions. Second operand 3 states. [2020-12-23 01:42:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:43,039 INFO L93 Difference]: Finished difference Result 229 states and 329 transitions. [2020-12-23 01:42:43,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:43,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 01:42:43,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:43,042 INFO L225 Difference]: With dead ends: 229 [2020-12-23 01:42:43,042 INFO L226 Difference]: Without dead ends: 227 [2020-12-23 01:42:43,043 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 [2020-12-23 01:42:43,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-12-23 01:42:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 193. [2020-12-23 01:42:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-12-23 01:42:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 271 transitions. [2020-12-23 01:42:43,069 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 271 transitions. Word has length 15 [2020-12-23 01:42:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:43,070 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 271 transitions. [2020-12-23 01:42:43,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:43,070 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 271 transitions. [2020-12-23 01:42:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 01:42:43,074 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:43,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:43,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 01:42:43,074 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:43,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1866793796, now seen corresponding path program 1 times [2020-12-23 01:42:43,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:43,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697748929] [2020-12-23 01:42:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:43,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697748929] [2020-12-23 01:42:43,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:43,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:43,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311199705] [2020-12-23 01:42:43,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:43,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:43,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:43,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:43,125 INFO L87 Difference]: Start difference. First operand 193 states and 271 transitions. Second operand 3 states. [2020-12-23 01:42:43,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:43,162 INFO L93 Difference]: Finished difference Result 437 states and 609 transitions. [2020-12-23 01:42:43,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:43,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 01:42:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:43,164 INFO L225 Difference]: With dead ends: 437 [2020-12-23 01:42:43,164 INFO L226 Difference]: Without dead ends: 251 [2020-12-23 01:42:43,165 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 [2020-12-23 01:42:43,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-12-23 01:42:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2020-12-23 01:42:43,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-12-23 01:42:43,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 331 transitions. [2020-12-23 01:42:43,179 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 331 transitions. Word has length 15 [2020-12-23 01:42:43,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:43,180 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 331 transitions. [2020-12-23 01:42:43,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 331 transitions. [2020-12-23 01:42:43,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:42:43,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:43,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:43,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 01:42:43,182 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:43,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:43,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1579092089, now seen corresponding path program 1 times [2020-12-23 01:42:43,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:43,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936220726] [2020-12-23 01:42:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:43,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936220726] [2020-12-23 01:42:43,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:43,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:43,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833181154] [2020-12-23 01:42:43,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:43,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:43,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:43,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:43,233 INFO L87 Difference]: Start difference. First operand 249 states and 331 transitions. Second operand 3 states. [2020-12-23 01:42:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:43,278 INFO L93 Difference]: Finished difference Result 381 states and 505 transitions. [2020-12-23 01:42:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:43,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-23 01:42:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:43,282 INFO L225 Difference]: With dead ends: 381 [2020-12-23 01:42:43,282 INFO L226 Difference]: Without dead ends: 263 [2020-12-23 01:42:43,284 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 [2020-12-23 01:42:43,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-12-23 01:42:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 261. [2020-12-23 01:42:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-12-23 01:42:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 339 transitions. [2020-12-23 01:42:43,307 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 339 transitions. Word has length 16 [2020-12-23 01:42:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:43,307 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 339 transitions. [2020-12-23 01:42:43,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 339 transitions. [2020-12-23 01:42:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:42:43,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:43,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:43,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 01:42:43,310 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:43,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:43,310 INFO L82 PathProgramCache]: Analyzing trace with hash -2035816837, now seen corresponding path program 1 times [2020-12-23 01:42:43,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:43,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993075768] [2020-12-23 01:42:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:43,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:43,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993075768] [2020-12-23 01:42:43,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:43,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:43,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565784967] [2020-12-23 01:42:43,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:43,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:43,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:43,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:43,334 INFO L87 Difference]: Start difference. First operand 261 states and 339 transitions. Second operand 3 states. [2020-12-23 01:42:43,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:43,357 INFO L93 Difference]: Finished difference Result 423 states and 540 transitions. [2020-12-23 01:42:43,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:43,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-23 01:42:43,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:43,360 INFO L225 Difference]: With dead ends: 423 [2020-12-23 01:42:43,360 INFO L226 Difference]: Without dead ends: 421 [2020-12-23 01:42:43,361 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 [2020-12-23 01:42:43,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-12-23 01:42:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 389. [2020-12-23 01:42:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-12-23 01:42:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 491 transitions. [2020-12-23 01:42:43,377 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 491 transitions. Word has length 16 [2020-12-23 01:42:43,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:43,377 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 491 transitions. [2020-12-23 01:42:43,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 491 transitions. [2020-12-23 01:42:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 01:42:43,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 01:42:43,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 01:42:43,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 01:42:43,380 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 01:42:43,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 01:42:43,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1449803833, now seen corresponding path program 1 times [2020-12-23 01:42:43,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 01:42:43,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950722102] [2020-12-23 01:42:43,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 01:42:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 01:42:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 01:42:43,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950722102] [2020-12-23 01:42:43,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 01:42:43,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 01:42:43,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845207036] [2020-12-23 01:42:43,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 01:42:43,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 01:42:43,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 01:42:43,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 01:42:43,402 INFO L87 Difference]: Start difference. First operand 389 states and 491 transitions. Second operand 3 states. [2020-12-23 01:42:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 01:42:43,430 INFO L93 Difference]: Finished difference Result 853 states and 1051 transitions. [2020-12-23 01:42:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 01:42:43,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-23 01:42:43,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 01:42:43,431 INFO L225 Difference]: With dead ends: 853 [2020-12-23 01:42:43,431 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 01:42:43,434 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 [2020-12-23 01:42:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 01:42:43,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 01:42:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 01:42:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 01:42:43,435 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-23 01:42:43,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 01:42:43,435 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 01:42:43,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 01:42:43,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 01:42:43,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 01:42:43,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 01:42:43,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-23 01:42:43,452 INFO L192 CegarLoopUtils]: At program point L85-1(lines 26 90) the Hoare annotation is: true [2020-12-23 01:42:43,453 INFO L189 CegarLoopUtils]: For program point L81(line 81) no Hoare annotation was computed. [2020-12-23 01:42:43,453 INFO L189 CegarLoopUtils]: For program point L65-1(lines 26 90) no Hoare annotation was computed. [2020-12-23 01:42:43,453 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-23 01:42:43,453 INFO L192 CegarLoopUtils]: At program point L94(lines 6 95) the Hoare annotation is: true [2020-12-23 01:42:43,453 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-23 01:42:43,454 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-23 01:42:43,454 INFO L189 CegarLoopUtils]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-12-23 01:42:43,454 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 93) no Hoare annotation was computed. [2020-12-23 01:42:43,454 INFO L189 CegarLoopUtils]: For program point L86(line 86) no Hoare annotation was computed. [2020-12-23 01:42:43,454 INFO L185 CegarLoopUtils]: At program point L86-1(lines 7 95) the Hoare annotation is: false [2020-12-23 01:42:43,454 INFO L189 CegarLoopUtils]: For program point L70-1(lines 26 90) no Hoare annotation was computed. [2020-12-23 01:42:43,454 INFO L189 CegarLoopUtils]: For program point L66(line 66) no Hoare annotation was computed. [2020-12-23 01:42:43,455 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-23 01:42:43,455 INFO L192 CegarLoopUtils]: At program point L91(lines 7 95) the Hoare annotation is: true [2020-12-23 01:42:43,455 INFO L189 CegarLoopUtils]: For program point L75-1(lines 26 90) no Hoare annotation was computed. [2020-12-23 01:42:43,455 INFO L189 CegarLoopUtils]: For program point L71(line 71) no Hoare annotation was computed. [2020-12-23 01:42:43,455 INFO L189 CegarLoopUtils]: For program point L59-1(lines 26 90) no Hoare annotation was computed. [2020-12-23 01:42:43,455 INFO L189 CegarLoopUtils]: For program point L55-1(lines 26 90) no Hoare annotation was computed. [2020-12-23 01:42:43,455 INFO L189 CegarLoopUtils]: For program point L51-1(lines 26 90) no Hoare annotation was computed. [2020-12-23 01:42:43,456 INFO L189 CegarLoopUtils]: For program point L80-1(lines 26 90) no Hoare annotation was computed. [2020-12-23 01:42:43,456 INFO L189 CegarLoopUtils]: For program point L47-1(lines 26 90) no Hoare annotation was computed. [2020-12-23 01:42:43,456 INFO L189 CegarLoopUtils]: For program point L76(line 76) no Hoare annotation was computed. [2020-12-23 01:42:43,456 INFO L189 CegarLoopUtils]: For program point L43(lines 43 45) no Hoare annotation was computed. [2020-12-23 01:42:43,456 INFO L189 CegarLoopUtils]: For program point L43-2(lines 26 90) no Hoare annotation was computed. [2020-12-23 01:42:43,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:42:43 BoogieIcfgContainer [2020-12-23 01:42:43,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 01:42:43,467 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 01:42:43,467 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 01:42:43,468 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 01:42:43,468 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:42:41" (3/4) ... [2020-12-23 01:42:43,472 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 01:42:43,482 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-23 01:42:43,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 01:42:43,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 01:42:43,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 01:42:43,534 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_5.c-witness.graphml [2020-12-23 01:42:43,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 01:42:43,537 INFO L168 Benchmark]: Toolchain (without parser) took 2725.87 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 126.6 MB in the beginning and 132.4 MB in the end (delta: -5.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:43,538 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:42:43,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.15 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 116.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:43,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.09 ms. Allocated memory is still 152.0 MB. Free memory was 116.5 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:43,540 INFO L168 Benchmark]: Boogie Preprocessor took 24.65 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 114.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:43,540 INFO L168 Benchmark]: RCFGBuilder took 444.16 ms. Allocated memory is still 152.0 MB. Free memory was 114.0 MB in the beginning and 99.1 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:43,541 INFO L168 Benchmark]: TraceAbstraction took 1886.15 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 98.5 MB in the beginning and 135.6 MB in the end (delta: -37.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 01:42:43,541 INFO L168 Benchmark]: Witness Printer took 67.44 ms. Allocated memory is still 182.5 MB. Free memory was 135.6 MB in the beginning and 132.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 01:42:43,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.15 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 116.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.09 ms. Allocated memory is still 152.0 MB. Free memory was 116.5 MB in the beginning and 115.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.65 ms. Allocated memory is still 152.0 MB. Free memory was 115.0 MB in the beginning and 114.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 444.16 ms. Allocated memory is still 152.0 MB. Free memory was 114.0 MB in the beginning and 99.1 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1886.15 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 98.5 MB in the beginning and 135.6 MB in the end (delta: -37.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 67.44 ms. Allocated memory is still 182.5 MB. Free memory was 135.6 MB in the beginning and 132.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: 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: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 574 SDtfs, 264 SDslu, 358 SDs, 0 SdLazy, 69 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 136 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 41 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 4278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...