/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_8.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 11:36:37,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 11:36:37,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 11:36:37,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 11:36:37,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 11:36:37,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 11:36:37,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 11:36:37,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 11:36:38,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 11:36:38,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 11:36:38,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 11:36:38,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 11:36:38,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 11:36:38,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 11:36:38,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 11:36:38,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 11:36:38,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 11:36:38,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 11:36:38,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 11:36:38,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 11:36:38,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 11:36:38,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 11:36:38,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 11:36:38,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 11:36:38,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 11:36:38,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 11:36:38,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 11:36:38,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 11:36:38,108 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 11:36:38,134 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 11:36:38,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 11:36:38,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 11:36:38,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 11:36:38,136 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 11:36:38,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 11:36:38,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 11:36:38,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 11:36:38,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 11:36:38,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 11:36:38,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 11:36:38,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 11:36:38,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 11:36:38,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 11:36:38,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 11:36:38,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 11:36:38,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 11:36:38,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 11:36:38,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 11:36:38,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 11:36:38,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 11:36:38,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 11:36:38,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 11:36:38,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 11:36:38,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 11:36:38,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 11:36:38,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 11:36:38,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 11:36:38,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 11:36:38,535 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 11:36:38,536 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 11:36:38,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_8.c [2021-01-06 11:36:38,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/963ff7d50/b95d04a3788e4bc7af2013656493ce60/FLAG0730092a4 [2021-01-06 11:36:39,164 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 11:36:39,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_8.c [2021-01-06 11:36:39,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/963ff7d50/b95d04a3788e4bc7af2013656493ce60/FLAG0730092a4 [2021-01-06 11:36:39,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/963ff7d50/b95d04a3788e4bc7af2013656493ce60 [2021-01-06 11:36:39,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 11:36:39,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 11:36:39,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 11:36:39,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 11:36:39,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 11:36:39,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:36:39" (1/1) ... [2021-01-06 11:36:39,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b768d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39, skipping insertion in model container [2021-01-06 11:36:39,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 11:36:39" (1/1) ... [2021-01-06 11:36:39,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 11:36:39,623 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[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] 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[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] 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[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] [2021-01-06 11:36:39,851 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_8.c[3218,3231] [2021-01-06 11:36:39,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:36:39,866 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[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] 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[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] 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[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk7~0,] left hand side expression in assignment: lhs: VariableLHS[~lk8~0,] [2021-01-06 11:36:39,901 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_8.c[3218,3231] [2021-01-06 11:36:39,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 11:36:39,918 INFO L208 MainTranslator]: Completed translation [2021-01-06 11:36:39,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39 WrapperNode [2021-01-06 11:36:39,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 11:36:39,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 11:36:39,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 11:36:39,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 11:36:39,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39" (1/1) ... [2021-01-06 11:36:39,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39" (1/1) ... [2021-01-06 11:36:39,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 11:36:39,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 11:36:39,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 11:36:39,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 11:36:39,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39" (1/1) ... [2021-01-06 11:36:39,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39" (1/1) ... [2021-01-06 11:36:39,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39" (1/1) ... [2021-01-06 11:36:39,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39" (1/1) ... [2021-01-06 11:36:39,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39" (1/1) ... [2021-01-06 11:36:39,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39" (1/1) ... [2021-01-06 11:36:39,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39" (1/1) ... [2021-01-06 11:36:39,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 11:36:39,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 11:36:39,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 11:36:39,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 11:36:39,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39" (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 [2021-01-06 11:36:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 11:36:40,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 11:36:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 11:36:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 11:36:40,441 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 11:36:40,442 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-01-06 11:36:40,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:40 BoogieIcfgContainer [2021-01-06 11:36:40,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 11:36:40,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 11:36:40,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 11:36:40,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 11:36:40,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 11:36:39" (1/3) ... [2021-01-06 11:36:40,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da31adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:36:40, skipping insertion in model container [2021-01-06 11:36:40,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 11:36:39" (2/3) ... [2021-01-06 11:36:40,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da31adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 11:36:40, skipping insertion in model container [2021-01-06 11:36:40,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:40" (3/3) ... [2021-01-06 11:36:40,452 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2021-01-06 11:36:40,459 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 11:36:40,463 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 11:36:40,482 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 11:36:40,512 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 11:36:40,512 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 11:36:40,512 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 11:36:40,513 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 11:36:40,513 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 11:36:40,513 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 11:36:40,513 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 11:36:40,513 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 11:36:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-01-06 11:36:40,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 11:36:40,539 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:40,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:40,541 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:40,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:40,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1577492323, now seen corresponding path program 1 times [2021-01-06 11:36:40,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:40,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40761933] [2021-01-06 11:36:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:40,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40761933] [2021-01-06 11:36:40,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:40,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:40,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658708240] [2021-01-06 11:36:40,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:40,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:40,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:41,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:41,003 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2021-01-06 11:36:41,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:41,093 INFO L93 Difference]: Finished difference Result 71 states and 121 transitions. [2021-01-06 11:36:41,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:41,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-06 11:36:41,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:41,113 INFO L225 Difference]: With dead ends: 71 [2021-01-06 11:36:41,114 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 11:36:41,117 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 [2021-01-06 11:36:41,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 11:36:41,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2021-01-06 11:36:41,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-01-06 11:36:41,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 70 transitions. [2021-01-06 11:36:41,178 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 70 transitions. Word has length 15 [2021-01-06 11:36:41,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:41,179 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 70 transitions. [2021-01-06 11:36:41,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:41,180 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 70 transitions. [2021-01-06 11:36:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 11:36:41,181 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:41,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:41,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 11:36:41,182 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:41,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:41,187 INFO L82 PathProgramCache]: Analyzing trace with hash -876427745, now seen corresponding path program 1 times [2021-01-06 11:36:41,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:41,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433388079] [2021-01-06 11:36:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:41,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433388079] [2021-01-06 11:36:41,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:41,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:41,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940826074] [2021-01-06 11:36:41,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:41,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:41,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:41,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:41,269 INFO L87 Difference]: Start difference. First operand 39 states and 70 transitions. Second operand 3 states. [2021-01-06 11:36:41,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:41,291 INFO L93 Difference]: Finished difference Result 94 states and 169 transitions. [2021-01-06 11:36:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:41,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2021-01-06 11:36:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:41,293 INFO L225 Difference]: With dead ends: 94 [2021-01-06 11:36:41,293 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 11:36:41,294 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 [2021-01-06 11:36:41,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 11:36:41,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2021-01-06 11:36:41,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-01-06 11:36:41,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 98 transitions. [2021-01-06 11:36:41,303 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 98 transitions. Word has length 15 [2021-01-06 11:36:41,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:41,303 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 98 transitions. [2021-01-06 11:36:41,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:41,303 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 98 transitions. [2021-01-06 11:36:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 11:36:41,304 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:41,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:41,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 11:36:41,305 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:41,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1657407761, now seen corresponding path program 1 times [2021-01-06 11:36:41,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:41,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552688667] [2021-01-06 11:36:41,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:41,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552688667] [2021-01-06 11:36:41,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:41,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:41,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632365956] [2021-01-06 11:36:41,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:41,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:41,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:41,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:41,406 INFO L87 Difference]: Start difference. First operand 55 states and 98 transitions. Second operand 3 states. [2021-01-06 11:36:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:41,445 INFO L93 Difference]: Finished difference Result 87 states and 150 transitions. [2021-01-06 11:36:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:41,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-06 11:36:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:41,448 INFO L225 Difference]: With dead ends: 87 [2021-01-06 11:36:41,448 INFO L226 Difference]: Without dead ends: 60 [2021-01-06 11:36:41,449 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 [2021-01-06 11:36:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-01-06 11:36:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-01-06 11:36:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-06 11:36:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 100 transitions. [2021-01-06 11:36:41,464 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 100 transitions. Word has length 16 [2021-01-06 11:36:41,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:41,465 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 100 transitions. [2021-01-06 11:36:41,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:41,466 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 100 transitions. [2021-01-06 11:36:41,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 11:36:41,467 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:41,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:41,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 11:36:41,470 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:41,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:41,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1399242323, now seen corresponding path program 1 times [2021-01-06 11:36:41,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:41,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384991257] [2021-01-06 11:36:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:41,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384991257] [2021-01-06 11:36:41,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:41,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:41,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84722700] [2021-01-06 11:36:41,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:41,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:41,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:41,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:41,582 INFO L87 Difference]: Start difference. First operand 58 states and 100 transitions. Second operand 3 states. [2021-01-06 11:36:41,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:41,602 INFO L93 Difference]: Finished difference Result 109 states and 189 transitions. [2021-01-06 11:36:41,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:41,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-06 11:36:41,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:41,604 INFO L225 Difference]: With dead ends: 109 [2021-01-06 11:36:41,604 INFO L226 Difference]: Without dead ends: 107 [2021-01-06 11:36:41,605 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 [2021-01-06 11:36:41,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-01-06 11:36:41,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2021-01-06 11:36:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2021-01-06 11:36:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2021-01-06 11:36:41,616 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 16 [2021-01-06 11:36:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:41,616 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2021-01-06 11:36:41,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:41,617 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2021-01-06 11:36:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 11:36:41,618 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:41,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:41,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 11:36:41,619 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:41,619 INFO L82 PathProgramCache]: Analyzing trace with hash -698177745, now seen corresponding path program 1 times [2021-01-06 11:36:41,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:41,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230715374] [2021-01-06 11:36:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:41,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:41,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230715374] [2021-01-06 11:36:41,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:41,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:41,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43731769] [2021-01-06 11:36:41,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:41,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:41,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:41,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:41,661 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand 3 states. [2021-01-06 11:36:41,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:41,680 INFO L93 Difference]: Finished difference Result 181 states and 315 transitions. [2021-01-06 11:36:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:41,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-01-06 11:36:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:41,683 INFO L225 Difference]: With dead ends: 181 [2021-01-06 11:36:41,683 INFO L226 Difference]: Without dead ends: 109 [2021-01-06 11:36:41,684 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 [2021-01-06 11:36:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-01-06 11:36:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2021-01-06 11:36:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-01-06 11:36:41,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 183 transitions. [2021-01-06 11:36:41,700 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 183 transitions. Word has length 16 [2021-01-06 11:36:41,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:41,701 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 183 transitions. [2021-01-06 11:36:41,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:41,701 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 183 transitions. [2021-01-06 11:36:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 11:36:41,702 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:41,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:41,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-06 11:36:41,703 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:41,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:41,704 INFO L82 PathProgramCache]: Analyzing trace with hash -426624716, now seen corresponding path program 1 times [2021-01-06 11:36:41,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:41,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247285547] [2021-01-06 11:36:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:41,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:41,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247285547] [2021-01-06 11:36:41,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:41,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:41,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356530334] [2021-01-06 11:36:41,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:41,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:41,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:41,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:41,778 INFO L87 Difference]: Start difference. First operand 107 states and 183 transitions. Second operand 3 states. [2021-01-06 11:36:41,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:41,794 INFO L93 Difference]: Finished difference Result 162 states and 274 transitions. [2021-01-06 11:36:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:41,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-06 11:36:41,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:41,796 INFO L225 Difference]: With dead ends: 162 [2021-01-06 11:36:41,797 INFO L226 Difference]: Without dead ends: 111 [2021-01-06 11:36:41,797 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 [2021-01-06 11:36:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-01-06 11:36:41,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2021-01-06 11:36:41,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-01-06 11:36:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 183 transitions. [2021-01-06 11:36:41,809 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 183 transitions. Word has length 17 [2021-01-06 11:36:41,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:41,809 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 183 transitions. [2021-01-06 11:36:41,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 183 transitions. [2021-01-06 11:36:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 11:36:41,811 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:41,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:41,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-06 11:36:41,812 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:41,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:41,812 INFO L82 PathProgramCache]: Analyzing trace with hash -168459278, now seen corresponding path program 1 times [2021-01-06 11:36:41,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:41,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413807600] [2021-01-06 11:36:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:41,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413807600] [2021-01-06 11:36:41,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:41,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:41,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634448594] [2021-01-06 11:36:41,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:41,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:41,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:41,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:41,844 INFO L87 Difference]: Start difference. First operand 109 states and 183 transitions. Second operand 3 states. [2021-01-06 11:36:41,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:41,863 INFO L93 Difference]: Finished difference Result 309 states and 521 transitions. [2021-01-06 11:36:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:41,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-06 11:36:41,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:41,865 INFO L225 Difference]: With dead ends: 309 [2021-01-06 11:36:41,865 INFO L226 Difference]: Without dead ends: 207 [2021-01-06 11:36:41,867 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 [2021-01-06 11:36:41,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-01-06 11:36:41,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2021-01-06 11:36:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2021-01-06 11:36:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 339 transitions. [2021-01-06 11:36:41,885 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 339 transitions. Word has length 17 [2021-01-06 11:36:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:41,885 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 339 transitions. [2021-01-06 11:36:41,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 339 transitions. [2021-01-06 11:36:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 11:36:41,887 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:41,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:41,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-06 11:36:41,888 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:41,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:41,888 INFO L82 PathProgramCache]: Analyzing trace with hash -869523856, now seen corresponding path program 1 times [2021-01-06 11:36:41,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:41,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257579015] [2021-01-06 11:36:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:41,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257579015] [2021-01-06 11:36:41,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:41,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:41,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710300690] [2021-01-06 11:36:41,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:41,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:41,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:41,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:41,932 INFO L87 Difference]: Start difference. First operand 205 states and 339 transitions. Second operand 3 states. [2021-01-06 11:36:41,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:41,966 INFO L93 Difference]: Finished difference Result 257 states and 429 transitions. [2021-01-06 11:36:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:41,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-01-06 11:36:41,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:41,969 INFO L225 Difference]: With dead ends: 257 [2021-01-06 11:36:41,969 INFO L226 Difference]: Without dead ends: 255 [2021-01-06 11:36:41,970 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 [2021-01-06 11:36:41,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-01-06 11:36:41,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2021-01-06 11:36:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2021-01-06 11:36:41,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 335 transitions. [2021-01-06 11:36:41,998 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 335 transitions. Word has length 17 [2021-01-06 11:36:42,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:42,001 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 335 transitions. [2021-01-06 11:36:42,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 335 transitions. [2021-01-06 11:36:42,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 11:36:42,004 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:42,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:42,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-06 11:36:42,005 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:42,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:42,006 INFO L82 PathProgramCache]: Analyzing trace with hash -927055644, now seen corresponding path program 1 times [2021-01-06 11:36:42,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:42,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268127586] [2021-01-06 11:36:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:42,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:42,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268127586] [2021-01-06 11:36:42,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:42,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:42,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961679076] [2021-01-06 11:36:42,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:42,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:42,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:42,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:42,046 INFO L87 Difference]: Start difference. First operand 205 states and 335 transitions. Second operand 3 states. [2021-01-06 11:36:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:42,064 INFO L93 Difference]: Finished difference Result 373 states and 617 transitions. [2021-01-06 11:36:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:42,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-01-06 11:36:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:42,067 INFO L225 Difference]: With dead ends: 373 [2021-01-06 11:36:42,067 INFO L226 Difference]: Without dead ends: 371 [2021-01-06 11:36:42,068 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 [2021-01-06 11:36:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-01-06 11:36:42,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 289. [2021-01-06 11:36:42,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2021-01-06 11:36:42,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 463 transitions. [2021-01-06 11:36:42,081 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 463 transitions. Word has length 18 [2021-01-06 11:36:42,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:42,081 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 463 transitions. [2021-01-06 11:36:42,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:42,082 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 463 transitions. [2021-01-06 11:36:42,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 11:36:42,083 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:42,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:42,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-01-06 11:36:42,084 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:42,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:42,085 INFO L82 PathProgramCache]: Analyzing trace with hash -225991066, now seen corresponding path program 1 times [2021-01-06 11:36:42,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:42,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909936002] [2021-01-06 11:36:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:42,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909936002] [2021-01-06 11:36:42,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:42,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:42,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077195487] [2021-01-06 11:36:42,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:42,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:42,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:42,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:42,117 INFO L87 Difference]: Start difference. First operand 289 states and 463 transitions. Second operand 3 states. [2021-01-06 11:36:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:42,138 INFO L93 Difference]: Finished difference Result 677 states and 1089 transitions. [2021-01-06 11:36:42,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:42,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-01-06 11:36:42,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:42,141 INFO L225 Difference]: With dead ends: 677 [2021-01-06 11:36:42,141 INFO L226 Difference]: Without dead ends: 395 [2021-01-06 11:36:42,143 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 [2021-01-06 11:36:42,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-01-06 11:36:42,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2021-01-06 11:36:42,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2021-01-06 11:36:42,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 619 transitions. [2021-01-06 11:36:42,158 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 619 transitions. Word has length 18 [2021-01-06 11:36:42,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:42,159 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 619 transitions. [2021-01-06 11:36:42,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:42,159 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 619 transitions. [2021-01-06 11:36:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 11:36:42,160 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:42,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:42,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-01-06 11:36:42,161 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:42,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:42,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1326261127, now seen corresponding path program 1 times [2021-01-06 11:36:42,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:42,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907455377] [2021-01-06 11:36:42,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:42,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907455377] [2021-01-06 11:36:42,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:42,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:42,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570080826] [2021-01-06 11:36:42,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:42,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:42,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:42,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:42,197 INFO L87 Difference]: Start difference. First operand 393 states and 619 transitions. Second operand 3 states. [2021-01-06 11:36:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:42,216 INFO L93 Difference]: Finished difference Result 597 states and 937 transitions. [2021-01-06 11:36:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:42,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-06 11:36:42,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:42,219 INFO L225 Difference]: With dead ends: 597 [2021-01-06 11:36:42,219 INFO L226 Difference]: Without dead ends: 407 [2021-01-06 11:36:42,221 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 [2021-01-06 11:36:42,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-01-06 11:36:42,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 405. [2021-01-06 11:36:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2021-01-06 11:36:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 627 transitions. [2021-01-06 11:36:42,236 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 627 transitions. Word has length 19 [2021-01-06 11:36:42,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:42,237 INFO L481 AbstractCegarLoop]: Abstraction has 405 states and 627 transitions. [2021-01-06 11:36:42,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:42,237 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 627 transitions. [2021-01-06 11:36:42,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 11:36:42,238 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:42,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:42,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-06 11:36:42,239 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:42,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:42,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1584426565, now seen corresponding path program 1 times [2021-01-06 11:36:42,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:42,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182204717] [2021-01-06 11:36:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:42,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182204717] [2021-01-06 11:36:42,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:42,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:42,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430977635] [2021-01-06 11:36:42,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:42,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:42,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:42,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:42,265 INFO L87 Difference]: Start difference. First operand 405 states and 627 transitions. Second operand 3 states. [2021-01-06 11:36:42,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:42,306 INFO L93 Difference]: Finished difference Result 713 states and 1117 transitions. [2021-01-06 11:36:42,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:42,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-06 11:36:42,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:42,311 INFO L225 Difference]: With dead ends: 713 [2021-01-06 11:36:42,312 INFO L226 Difference]: Without dead ends: 711 [2021-01-06 11:36:42,312 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 [2021-01-06 11:36:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-01-06 11:36:42,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 581. [2021-01-06 11:36:42,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2021-01-06 11:36:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 875 transitions. [2021-01-06 11:36:42,331 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 875 transitions. Word has length 19 [2021-01-06 11:36:42,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:42,331 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 875 transitions. [2021-01-06 11:36:42,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:42,331 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 875 transitions. [2021-01-06 11:36:42,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-06 11:36:42,333 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:42,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:42,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-01-06 11:36:42,333 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:42,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:42,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2009476153, now seen corresponding path program 1 times [2021-01-06 11:36:42,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:42,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716661525] [2021-01-06 11:36:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:42,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716661525] [2021-01-06 11:36:42,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:42,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:42,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127217610] [2021-01-06 11:36:42,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:42,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:42,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:42,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:42,358 INFO L87 Difference]: Start difference. First operand 581 states and 875 transitions. Second operand 3 states. [2021-01-06 11:36:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:42,381 INFO L93 Difference]: Finished difference Result 1337 states and 2013 transitions. [2021-01-06 11:36:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:42,381 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-06 11:36:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:42,386 INFO L225 Difference]: With dead ends: 1337 [2021-01-06 11:36:42,386 INFO L226 Difference]: Without dead ends: 775 [2021-01-06 11:36:42,387 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 [2021-01-06 11:36:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-01-06 11:36:42,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 773. [2021-01-06 11:36:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 773 states. [2021-01-06 11:36:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1139 transitions. [2021-01-06 11:36:42,412 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1139 transitions. Word has length 19 [2021-01-06 11:36:42,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:42,412 INFO L481 AbstractCegarLoop]: Abstraction has 773 states and 1139 transitions. [2021-01-06 11:36:42,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:42,413 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1139 transitions. [2021-01-06 11:36:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 11:36:42,414 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:42,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:42,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-06 11:36:42,415 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:42,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1872798619, now seen corresponding path program 1 times [2021-01-06 11:36:42,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:42,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007168184] [2021-01-06 11:36:42,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:42,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:42,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007168184] [2021-01-06 11:36:42,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:42,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:42,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145543197] [2021-01-06 11:36:42,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:42,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:42,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:42,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:42,444 INFO L87 Difference]: Start difference. First operand 773 states and 1139 transitions. Second operand 3 states. [2021-01-06 11:36:42,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:42,465 INFO L93 Difference]: Finished difference Result 1161 states and 1701 transitions. [2021-01-06 11:36:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:42,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-06 11:36:42,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:42,470 INFO L225 Difference]: With dead ends: 1161 [2021-01-06 11:36:42,470 INFO L226 Difference]: Without dead ends: 791 [2021-01-06 11:36:42,471 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 [2021-01-06 11:36:42,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-01-06 11:36:42,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 789. [2021-01-06 11:36:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2021-01-06 11:36:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1139 transitions. [2021-01-06 11:36:42,498 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1139 transitions. Word has length 20 [2021-01-06 11:36:42,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:42,498 INFO L481 AbstractCegarLoop]: Abstraction has 789 states and 1139 transitions. [2021-01-06 11:36:42,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:42,498 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1139 transitions. [2021-01-06 11:36:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 11:36:42,500 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:42,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:42,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-06 11:36:42,500 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:42,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:42,501 INFO L82 PathProgramCache]: Analyzing trace with hash 2130964057, now seen corresponding path program 1 times [2021-01-06 11:36:42,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:42,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690397309] [2021-01-06 11:36:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:42,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690397309] [2021-01-06 11:36:42,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:42,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:42,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128334848] [2021-01-06 11:36:42,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:42,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:42,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:42,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:42,524 INFO L87 Difference]: Start difference. First operand 789 states and 1139 transitions. Second operand 3 states. [2021-01-06 11:36:42,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:42,552 INFO L93 Difference]: Finished difference Result 1353 states and 1973 transitions. [2021-01-06 11:36:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:42,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-06 11:36:42,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:42,559 INFO L225 Difference]: With dead ends: 1353 [2021-01-06 11:36:42,559 INFO L226 Difference]: Without dead ends: 1351 [2021-01-06 11:36:42,560 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 [2021-01-06 11:36:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-01-06 11:36:42,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1157. [2021-01-06 11:36:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2021-01-06 11:36:42,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1619 transitions. [2021-01-06 11:36:42,596 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1619 transitions. Word has length 20 [2021-01-06 11:36:42,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:42,596 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 1619 transitions. [2021-01-06 11:36:42,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:42,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1619 transitions. [2021-01-06 11:36:42,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-06 11:36:42,599 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:42,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:42,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-01-06 11:36:42,599 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:42,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:42,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1462938661, now seen corresponding path program 1 times [2021-01-06 11:36:42,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:42,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344320469] [2021-01-06 11:36:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:42,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344320469] [2021-01-06 11:36:42,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:42,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:42,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776948425] [2021-01-06 11:36:42,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:42,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:42,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:42,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:42,623 INFO L87 Difference]: Start difference. First operand 1157 states and 1619 transitions. Second operand 3 states. [2021-01-06 11:36:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:42,659 INFO L93 Difference]: Finished difference Result 2633 states and 3669 transitions. [2021-01-06 11:36:42,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:42,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-01-06 11:36:42,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:42,667 INFO L225 Difference]: With dead ends: 2633 [2021-01-06 11:36:42,668 INFO L226 Difference]: Without dead ends: 1511 [2021-01-06 11:36:42,670 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 [2021-01-06 11:36:42,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-01-06 11:36:42,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1509. [2021-01-06 11:36:42,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1509 states. [2021-01-06 11:36:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2051 transitions. [2021-01-06 11:36:42,717 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2051 transitions. Word has length 20 [2021-01-06 11:36:42,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:42,717 INFO L481 AbstractCegarLoop]: Abstraction has 1509 states and 2051 transitions. [2021-01-06 11:36:42,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2051 transitions. [2021-01-06 11:36:42,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 11:36:42,720 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:42,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:42,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-01-06 11:36:42,721 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:42,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:42,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1635592028, now seen corresponding path program 1 times [2021-01-06 11:36:42,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:42,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103994633] [2021-01-06 11:36:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:42,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103994633] [2021-01-06 11:36:42,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:42,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:42,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836596447] [2021-01-06 11:36:42,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:42,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:42,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:42,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:42,745 INFO L87 Difference]: Start difference. First operand 1509 states and 2051 transitions. Second operand 3 states. [2021-01-06 11:36:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:42,783 INFO L93 Difference]: Finished difference Result 2265 states and 3061 transitions. [2021-01-06 11:36:42,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:42,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-01-06 11:36:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:42,792 INFO L225 Difference]: With dead ends: 2265 [2021-01-06 11:36:42,792 INFO L226 Difference]: Without dead ends: 1543 [2021-01-06 11:36:42,793 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 [2021-01-06 11:36:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2021-01-06 11:36:42,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1541. [2021-01-06 11:36:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1541 states. [2021-01-06 11:36:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2051 transitions. [2021-01-06 11:36:42,863 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2051 transitions. Word has length 21 [2021-01-06 11:36:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:42,863 INFO L481 AbstractCegarLoop]: Abstraction has 1541 states and 2051 transitions. [2021-01-06 11:36:42,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:42,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2051 transitions. [2021-01-06 11:36:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 11:36:42,866 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:42,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:42,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-01-06 11:36:42,866 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:42,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:42,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1893757466, now seen corresponding path program 1 times [2021-01-06 11:36:42,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:42,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189202986] [2021-01-06 11:36:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:42,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189202986] [2021-01-06 11:36:42,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:42,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:42,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307212713] [2021-01-06 11:36:42,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:42,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:42,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:42,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:42,889 INFO L87 Difference]: Start difference. First operand 1541 states and 2051 transitions. Second operand 3 states. [2021-01-06 11:36:42,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:42,937 INFO L93 Difference]: Finished difference Result 2569 states and 3429 transitions. [2021-01-06 11:36:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:42,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-01-06 11:36:42,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:42,949 INFO L225 Difference]: With dead ends: 2569 [2021-01-06 11:36:42,949 INFO L226 Difference]: Without dead ends: 2567 [2021-01-06 11:36:42,951 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 [2021-01-06 11:36:42,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-01-06 11:36:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2309. [2021-01-06 11:36:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2021-01-06 11:36:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 2979 transitions. [2021-01-06 11:36:43,018 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 2979 transitions. Word has length 21 [2021-01-06 11:36:43,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:43,018 INFO L481 AbstractCegarLoop]: Abstraction has 2309 states and 2979 transitions. [2021-01-06 11:36:43,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 2979 transitions. [2021-01-06 11:36:43,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 11:36:43,022 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:43,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:43,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-01-06 11:36:43,022 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:43,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:43,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1700145252, now seen corresponding path program 1 times [2021-01-06 11:36:43,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:43,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484697492] [2021-01-06 11:36:43,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:43,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:43,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484697492] [2021-01-06 11:36:43,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:43,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:43,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267847691] [2021-01-06 11:36:43,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:43,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:43,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:43,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:43,071 INFO L87 Difference]: Start difference. First operand 2309 states and 2979 transitions. Second operand 3 states. [2021-01-06 11:36:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:43,147 INFO L93 Difference]: Finished difference Result 5193 states and 6629 transitions. [2021-01-06 11:36:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:43,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-01-06 11:36:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:43,160 INFO L225 Difference]: With dead ends: 5193 [2021-01-06 11:36:43,161 INFO L226 Difference]: Without dead ends: 2951 [2021-01-06 11:36:43,166 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 [2021-01-06 11:36:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-01-06 11:36:43,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2949. [2021-01-06 11:36:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2949 states. [2021-01-06 11:36:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 3651 transitions. [2021-01-06 11:36:43,260 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 3651 transitions. Word has length 21 [2021-01-06 11:36:43,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:43,260 INFO L481 AbstractCegarLoop]: Abstraction has 2949 states and 3651 transitions. [2021-01-06 11:36:43,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:43,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 3651 transitions. [2021-01-06 11:36:43,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 11:36:43,265 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:43,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:43,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-01-06 11:36:43,265 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:43,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:43,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1422844656, now seen corresponding path program 1 times [2021-01-06 11:36:43,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:43,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837438627] [2021-01-06 11:36:43,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:43,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837438627] [2021-01-06 11:36:43,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:43,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:43,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560217870] [2021-01-06 11:36:43,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:43,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:43,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:43,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:43,297 INFO L87 Difference]: Start difference. First operand 2949 states and 3651 transitions. Second operand 3 states. [2021-01-06 11:36:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:43,386 INFO L93 Difference]: Finished difference Result 4425 states and 5445 transitions. [2021-01-06 11:36:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:43,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-01-06 11:36:43,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:43,400 INFO L225 Difference]: With dead ends: 4425 [2021-01-06 11:36:43,400 INFO L226 Difference]: Without dead ends: 3015 [2021-01-06 11:36:43,403 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 [2021-01-06 11:36:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2021-01-06 11:36:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 3013. [2021-01-06 11:36:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3013 states. [2021-01-06 11:36:43,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3013 states to 3013 states and 3651 transitions. [2021-01-06 11:36:43,502 INFO L78 Accepts]: Start accepts. Automaton has 3013 states and 3651 transitions. Word has length 22 [2021-01-06 11:36:43,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:43,502 INFO L481 AbstractCegarLoop]: Abstraction has 3013 states and 3651 transitions. [2021-01-06 11:36:43,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:43,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3013 states and 3651 transitions. [2021-01-06 11:36:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 11:36:43,507 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:43,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:43,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-01-06 11:36:43,509 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:43,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:43,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1164679218, now seen corresponding path program 1 times [2021-01-06 11:36:43,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:43,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86869767] [2021-01-06 11:36:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:43,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86869767] [2021-01-06 11:36:43,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:43,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:43,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798657078] [2021-01-06 11:36:43,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:43,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:43,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:43,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:43,540 INFO L87 Difference]: Start difference. First operand 3013 states and 3651 transitions. Second operand 3 states. [2021-01-06 11:36:43,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:43,644 INFO L93 Difference]: Finished difference Result 4871 states and 5828 transitions. [2021-01-06 11:36:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:43,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-01-06 11:36:43,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:43,666 INFO L225 Difference]: With dead ends: 4871 [2021-01-06 11:36:43,667 INFO L226 Difference]: Without dead ends: 4869 [2021-01-06 11:36:43,669 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 [2021-01-06 11:36:43,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2021-01-06 11:36:43,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4613. [2021-01-06 11:36:43,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4613 states. [2021-01-06 11:36:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 5443 transitions. [2021-01-06 11:36:43,877 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 5443 transitions. Word has length 22 [2021-01-06 11:36:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:43,877 INFO L481 AbstractCegarLoop]: Abstraction has 4613 states and 5443 transitions. [2021-01-06 11:36:43,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 5443 transitions. [2021-01-06 11:36:43,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-06 11:36:43,885 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 11:36:43,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 11:36:43,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-01-06 11:36:43,886 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 11:36:43,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 11:36:43,886 INFO L82 PathProgramCache]: Analyzing trace with hash -463614640, now seen corresponding path program 1 times [2021-01-06 11:36:43,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 11:36:43,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271201774] [2021-01-06 11:36:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 11:36:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 11:36:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 11:36:43,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271201774] [2021-01-06 11:36:43,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 11:36:43,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 11:36:43,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052584499] [2021-01-06 11:36:43,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 11:36:43,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 11:36:43,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 11:36:43,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 11:36:43,909 INFO L87 Difference]: Start difference. First operand 4613 states and 5443 transitions. Second operand 3 states. [2021-01-06 11:36:44,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 11:36:44,064 INFO L93 Difference]: Finished difference Result 10245 states and 11843 transitions. [2021-01-06 11:36:44,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 11:36:44,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-01-06 11:36:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 11:36:44,066 INFO L225 Difference]: With dead ends: 10245 [2021-01-06 11:36:44,066 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 11:36:44,076 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 [2021-01-06 11:36:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 11:36:44,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 11:36:44,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 11:36:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 11:36:44,077 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-01-06 11:36:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 11:36:44,077 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 11:36:44,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 11:36:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 11:36:44,077 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 11:36:44,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-01-06 11:36:44,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 11:36:44,095 INFO L189 CegarLoopUtils]: For program point L93(line 93) no Hoare annotation was computed. [2021-01-06 11:36:44,095 INFO L189 CegarLoopUtils]: For program point L118(line 118) no Hoare annotation was computed. [2021-01-06 11:36:44,095 INFO L189 CegarLoopUtils]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,095 INFO L192 CegarLoopUtils]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2021-01-06 11:36:44,095 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 11:36:44,095 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 11:36:44,096 INFO L189 CegarLoopUtils]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,096 INFO L189 CegarLoopUtils]: For program point L78-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,096 INFO L192 CegarLoopUtils]: At program point L136(lines 6 137) the Hoare annotation is: true [2021-01-06 11:36:44,096 INFO L189 CegarLoopUtils]: For program point L103(line 103) no Hoare annotation was computed. [2021-01-06 11:36:44,096 INFO L189 CegarLoopUtils]: For program point L37(lines 37 39) no Hoare annotation was computed. [2021-01-06 11:36:44,096 INFO L189 CegarLoopUtils]: For program point L70-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,096 INFO L189 CegarLoopUtils]: For program point L128(line 128) no Hoare annotation was computed. [2021-01-06 11:36:44,096 INFO L185 CegarLoopUtils]: At program point L128-1(lines 7 137) the Hoare annotation is: false [2021-01-06 11:36:44,096 INFO L189 CegarLoopUtils]: For program point L62-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,096 INFO L189 CegarLoopUtils]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,097 INFO L189 CegarLoopUtils]: For program point L113(line 113) no Hoare annotation was computed. [2021-01-06 11:36:44,097 INFO L189 CegarLoopUtils]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,097 INFO L189 CegarLoopUtils]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,097 INFO L189 CegarLoopUtils]: For program point L98(line 98) no Hoare annotation was computed. [2021-01-06 11:36:44,097 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 11:36:44,097 INFO L189 CegarLoopUtils]: For program point L123(line 123) no Hoare annotation was computed. [2021-01-06 11:36:44,097 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 135) no Hoare annotation was computed. [2021-01-06 11:36:44,097 INFO L189 CegarLoopUtils]: For program point L82-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,097 INFO L189 CegarLoopUtils]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,098 INFO L189 CegarLoopUtils]: For program point L74-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,098 INFO L189 CegarLoopUtils]: For program point L66-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,098 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 11:36:44,098 INFO L189 CegarLoopUtils]: For program point L58(lines 58 60) no Hoare annotation was computed. [2021-01-06 11:36:44,098 INFO L189 CegarLoopUtils]: For program point L58-2(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,098 INFO L189 CegarLoopUtils]: For program point L108(line 108) no Hoare annotation was computed. [2021-01-06 11:36:44,098 INFO L192 CegarLoopUtils]: At program point L133(lines 7 137) the Hoare annotation is: true [2021-01-06 11:36:44,098 INFO L189 CegarLoopUtils]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,098 INFO L189 CegarLoopUtils]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2021-01-06 11:36:44,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 11:36:44 BoogieIcfgContainer [2021-01-06 11:36:44,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 11:36:44,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 11:36:44,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 11:36:44,110 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 11:36:44,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 11:36:40" (3/4) ... [2021-01-06 11:36:44,114 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 11:36:44,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-01-06 11:36:44,128 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 11:36:44,129 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 11:36:44,129 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 11:36:44,184 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_8.c-witness.graphml [2021-01-06 11:36:44,184 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 11:36:44,187 INFO L168 Benchmark]: Toolchain (without parser) took 4621.11 ms. Allocated memory was 167.8 MB in the beginning and 242.2 MB in the end (delta: 74.4 MB). Free memory was 149.4 MB in the beginning and 154.6 MB in the end (delta: -5.3 MB). Peak memory consumption was 69.5 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:44,187 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 167.8 MB. Free memory is still 140.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 11:36:44,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.40 ms. Allocated memory is still 167.8 MB. Free memory was 149.2 MB in the beginning and 139.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:44,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.81 ms. Allocated memory is still 167.8 MB. Free memory was 138.8 MB in the beginning and 137.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:44,188 INFO L168 Benchmark]: Boogie Preprocessor took 28.90 ms. Allocated memory is still 167.8 MB. Free memory was 137.2 MB in the beginning and 136.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:44,189 INFO L168 Benchmark]: RCFGBuilder took 454.56 ms. Allocated memory is still 167.8 MB. Free memory was 135.9 MB in the beginning and 133.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:44,189 INFO L168 Benchmark]: TraceAbstraction took 3664.36 ms. Allocated memory was 167.8 MB in the beginning and 242.2 MB in the end (delta: 74.4 MB). Free memory was 133.5 MB in the beginning and 158.3 MB in the end (delta: -24.8 MB). Peak memory consumption was 50.7 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:44,189 INFO L168 Benchmark]: Witness Printer took 74.53 ms. Allocated memory is still 242.2 MB. Free memory was 158.3 MB in the beginning and 154.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-01-06 11:36:44,192 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 167.8 MB. Free memory is still 140.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 349.40 ms. Allocated memory is still 167.8 MB. Free memory was 149.2 MB in the beginning and 139.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.81 ms. Allocated memory is still 167.8 MB. Free memory was 138.8 MB in the beginning and 137.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.90 ms. Allocated memory is still 167.8 MB. Free memory was 137.2 MB in the beginning and 136.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 454.56 ms. Allocated memory is still 167.8 MB. Free memory was 135.9 MB in the beginning and 133.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3664.36 ms. Allocated memory was 167.8 MB in the beginning and 242.2 MB in the end (delta: 74.4 MB). Free memory was 133.5 MB in the beginning and 158.3 MB in the end (delta: -24.8 MB). Peak memory consumption was 50.7 MB. Max. memory is 8.0 GB. * Witness Printer took 74.53 ms. Allocated memory is still 242.2 MB. Free memory was 158.3 MB in the beginning and 154.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 135]: 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: 35]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1474 SDtfs, 720 SDslu, 964 SDs, 0 SdLazy, 117 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4613occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 22 MinimizatonAttempts, 1044 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 265 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 14367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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...