/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/pthread-wmm/safe021_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:43:24,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:43:24,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:43:24,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:43:24,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:43:24,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:43:24,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:43:24,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:43:24,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:43:24,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:43:24,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:43:24,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:43:24,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:43:24,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:43:24,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:43:24,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:43:24,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:43:24,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:43:24,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:43:24,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:43:24,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:43:24,880 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:43:24,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:43:24,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:43:24,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:43:24,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:43:24,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:43:24,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:43:24,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:43:24,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:43:24,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:43:24,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:43:24,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:43:24,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:43:24,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:43:24,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:43:24,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:43:24,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:43:24,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:43:24,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:43:24,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:43:24,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 13:43:24,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:43:24,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:43:24,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:43:24,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:43:24,975 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:43:24,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:43:24,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:43:24,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:43:24,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:43:24,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:43:24,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:43:24,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:43:24,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:43:24,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:43:24,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:43:24,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:43:24,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:43:24,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:43:24,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:43:24,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:43:24,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:43:24,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:43:24,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:43:24,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:43:24,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:43:24,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:43:25,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:43:25,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:43:25,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:43:25,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:43:25,413 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:43:25,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i [2020-12-23 13:43:25,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/42f5d999b/737b92fb1514470fa33114034b7fe124/FLAGce5fb935b [2020-12-23 13:43:26,240 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:43:26,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i [2020-12-23 13:43:26,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/42f5d999b/737b92fb1514470fa33114034b7fe124/FLAGce5fb935b [2020-12-23 13:43:26,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/42f5d999b/737b92fb1514470fa33114034b7fe124 [2020-12-23 13:43:26,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:43:26,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:43:26,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:43:26,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:43:26,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:43:26,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:43:26" (1/1) ... [2020-12-23 13:43:26,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de6c2d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:26, skipping insertion in model container [2020-12-23 13:43:26,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:43:26" (1/1) ... [2020-12-23 13:43:26,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:43:26,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:43:26,825 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/pthread-wmm/safe021_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:43:26,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:43:27,007 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:43:27,026 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe021_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EBX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:43:27,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:43:27,257 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:43:27,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:27 WrapperNode [2020-12-23 13:43:27,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:43:27,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:43:27,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:43:27,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:43:27,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:27" (1/1) ... [2020-12-23 13:43:27,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:27" (1/1) ... [2020-12-23 13:43:27,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:43:27,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:43:27,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:43:27,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:43:27,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:27" (1/1) ... [2020-12-23 13:43:27,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:27" (1/1) ... [2020-12-23 13:43:27,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:27" (1/1) ... [2020-12-23 13:43:27,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:27" (1/1) ... [2020-12-23 13:43:27,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:27" (1/1) ... [2020-12-23 13:43:27,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:27" (1/1) ... [2020-12-23 13:43:27,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:27" (1/1) ... [2020-12-23 13:43:27,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:43:27,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:43:27,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:43:27,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:43:27,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:43:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:43:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:43:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:43:27,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:43:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:43:27,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:43:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:43:27,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:43:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:43:27,561 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:43:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:43:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:43:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:43:27,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:43:27,563 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-23 13:43:28,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:43:28,017 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:43:28,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:43:28 BoogieIcfgContainer [2020-12-23 13:43:28,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:43:28,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:43:28,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:43:28,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:43:28,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:43:26" (1/3) ... [2020-12-23 13:43:28,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78cd5b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:43:28, skipping insertion in model container [2020-12-23 13:43:28,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:43:27" (2/3) ... [2020-12-23 13:43:28,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78cd5b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:43:28, skipping insertion in model container [2020-12-23 13:43:28,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:43:28" (3/3) ... [2020-12-23 13:43:28,028 INFO L111 eAbstractionObserver]: Analyzing ICFG safe021_tso.opt.i [2020-12-23 13:43:28,035 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:43:28,036 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:43:28,041 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:43:28,042 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:43:28,079 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,079 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,079 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,079 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,080 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,080 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,080 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,080 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,082 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,082 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,082 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,082 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,083 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,083 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,083 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,083 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,083 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,085 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,085 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,085 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,085 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,085 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,086 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,086 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,086 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,086 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,087 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,087 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,087 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,090 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,090 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,096 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,097 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,097 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,097 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,100 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,101 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:43:28,103 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:43:28,125 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:43:28,151 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:43:28,151 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:43:28,151 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:43:28,151 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:43:28,151 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:43:28,152 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:43:28,152 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:43:28,152 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:43:28,166 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:43:28,169 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:43:28,172 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:43:28,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-23 13:43:28,245 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-23 13:43:28,245 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:43:28,249 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-23 13:43:28,256 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-23 13:43:31,493 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-23 13:43:31,604 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:43:31,832 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-23 13:43:31,935 INFO L131 LiptonReduction]: Checked pairs total: 2563 [2020-12-23 13:43:31,935 INFO L133 LiptonReduction]: Total number of compositions: 61 [2020-12-23 13:43:31,942 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-23 13:43:31,973 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-23 13:43:31,975 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-23 13:43:31,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:43:31,983 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:31,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:31,984 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:31,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:31,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1485857802, now seen corresponding path program 1 times [2020-12-23 13:43:32,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:32,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206008435] [2020-12-23 13:43:32,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:32,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206008435] [2020-12-23 13:43:32,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:32,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:43:32,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410026125] [2020-12-23 13:43:32,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:43:32,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:32,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:43:32,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:43:32,240 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-23 13:43:32,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:32,297 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-23 13:43:32,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:43:32,299 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 13:43:32,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:32,329 INFO L225 Difference]: With dead ends: 362 [2020-12-23 13:43:32,329 INFO L226 Difference]: Without dead ends: 298 [2020-12-23 13:43:32,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:43:32,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-23 13:43:32,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-23 13:43:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-23 13:43:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-23 13:43:32,459 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-23 13:43:32,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:32,464 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-23 13:43:32,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:43:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-23 13:43:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:43:32,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:32,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:32,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:43:32,469 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:32,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:32,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1183024898, now seen corresponding path program 1 times [2020-12-23 13:43:32,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:32,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185040570] [2020-12-23 13:43:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:32,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185040570] [2020-12-23 13:43:32,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:32,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:43:32,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427558696] [2020-12-23 13:43:32,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:43:32,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:32,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:43:32,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:43:32,774 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-23 13:43:32,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:32,873 INFO L93 Difference]: Finished difference Result 516 states and 1393 transitions. [2020-12-23 13:43:32,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:43:32,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:43:32,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:32,880 INFO L225 Difference]: With dead ends: 516 [2020-12-23 13:43:32,880 INFO L226 Difference]: Without dead ends: 398 [2020-12-23 13:43:32,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:43:32,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-12-23 13:43:32,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 338. [2020-12-23 13:43:32,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-12-23 13:43:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 944 transitions. [2020-12-23 13:43:32,926 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 944 transitions. Word has length 9 [2020-12-23 13:43:32,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:32,927 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 944 transitions. [2020-12-23 13:43:32,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:43:32,927 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 944 transitions. [2020-12-23 13:43:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:43:32,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:32,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:32,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:43:32,929 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:32,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:32,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1694304319, now seen corresponding path program 1 times [2020-12-23 13:43:32,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:32,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091639504] [2020-12-23 13:43:32,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:33,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091639504] [2020-12-23 13:43:33,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:33,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:43:33,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402973103] [2020-12-23 13:43:33,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:43:33,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:33,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:43:33,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:43:33,032 INFO L87 Difference]: Start difference. First operand 338 states and 944 transitions. Second operand 5 states. [2020-12-23 13:43:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:33,116 INFO L93 Difference]: Finished difference Result 428 states and 1127 transitions. [2020-12-23 13:43:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:43:33,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:43:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:33,120 INFO L225 Difference]: With dead ends: 428 [2020-12-23 13:43:33,120 INFO L226 Difference]: Without dead ends: 362 [2020-12-23 13:43:33,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:43:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-12-23 13:43:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 290. [2020-12-23 13:43:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-12-23 13:43:33,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 804 transitions. [2020-12-23 13:43:33,135 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 804 transitions. Word has length 10 [2020-12-23 13:43:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:33,135 INFO L481 AbstractCegarLoop]: Abstraction has 290 states and 804 transitions. [2020-12-23 13:43:33,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:43:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 804 transitions. [2020-12-23 13:43:33,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:43:33,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:33,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:33,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:43:33,138 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:33,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:33,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1980956361, now seen corresponding path program 1 times [2020-12-23 13:43:33,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:33,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454561082] [2020-12-23 13:43:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:33,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454561082] [2020-12-23 13:43:33,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:33,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:43:33,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118153903] [2020-12-23 13:43:33,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:43:33,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:33,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:43:33,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:43:33,254 INFO L87 Difference]: Start difference. First operand 290 states and 804 transitions. Second operand 5 states. [2020-12-23 13:43:33,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:33,361 INFO L93 Difference]: Finished difference Result 408 states and 1053 transitions. [2020-12-23 13:43:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:43:33,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:43:33,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:33,365 INFO L225 Difference]: With dead ends: 408 [2020-12-23 13:43:33,365 INFO L226 Difference]: Without dead ends: 338 [2020-12-23 13:43:33,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:43:33,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-12-23 13:43:33,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 278. [2020-12-23 13:43:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-23 13:43:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 760 transitions. [2020-12-23 13:43:33,380 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 760 transitions. Word has length 10 [2020-12-23 13:43:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:33,381 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 760 transitions. [2020-12-23 13:43:33,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:43:33,381 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 760 transitions. [2020-12-23 13:43:33,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:43:33,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:33,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:33,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:43:33,384 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:33,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:33,384 INFO L82 PathProgramCache]: Analyzing trace with hash 983803802, now seen corresponding path program 1 times [2020-12-23 13:43:33,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:33,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426511383] [2020-12-23 13:43:33,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:33,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426511383] [2020-12-23 13:43:33,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:33,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:43:33,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483833160] [2020-12-23 13:43:33,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:43:33,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:33,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:43:33,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:43:33,459 INFO L87 Difference]: Start difference. First operand 278 states and 760 transitions. Second operand 5 states. [2020-12-23 13:43:33,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:33,537 INFO L93 Difference]: Finished difference Result 340 states and 898 transitions. [2020-12-23 13:43:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:43:33,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 13:43:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:33,539 INFO L225 Difference]: With dead ends: 340 [2020-12-23 13:43:33,540 INFO L226 Difference]: Without dead ends: 178 [2020-12-23 13:43:33,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 13:43:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-23 13:43:33,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-12-23 13:43:33,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-12-23 13:43:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 444 transitions. [2020-12-23 13:43:33,548 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 444 transitions. Word has length 11 [2020-12-23 13:43:33,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:33,549 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 444 transitions. [2020-12-23 13:43:33,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:43:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 444 transitions. [2020-12-23 13:43:33,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 13:43:33,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:33,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:33,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:43:33,551 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:33,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:33,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1699197876, now seen corresponding path program 1 times [2020-12-23 13:43:33,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:33,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028982025] [2020-12-23 13:43:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:33,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028982025] [2020-12-23 13:43:33,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:33,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:43:33,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394686818] [2020-12-23 13:43:33,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:43:33,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:33,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:43:33,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:43:33,618 INFO L87 Difference]: Start difference. First operand 178 states and 444 transitions. Second operand 4 states. [2020-12-23 13:43:33,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:33,666 INFO L93 Difference]: Finished difference Result 194 states and 437 transitions. [2020-12-23 13:43:33,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:43:33,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 13:43:33,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:33,668 INFO L225 Difference]: With dead ends: 194 [2020-12-23 13:43:33,668 INFO L226 Difference]: Without dead ends: 150 [2020-12-23 13:43:33,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:43:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-23 13:43:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-12-23 13:43:33,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-12-23 13:43:33,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 339 transitions. [2020-12-23 13:43:33,675 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 339 transitions. Word has length 12 [2020-12-23 13:43:33,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:33,675 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 339 transitions. [2020-12-23 13:43:33,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:43:33,675 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 339 transitions. [2020-12-23 13:43:33,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:43:33,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:33,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:33,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:43:33,676 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:33,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:33,677 INFO L82 PathProgramCache]: Analyzing trace with hash -610429625, now seen corresponding path program 1 times [2020-12-23 13:43:33,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:33,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670593983] [2020-12-23 13:43:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:33,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670593983] [2020-12-23 13:43:33,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:33,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:43:33,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812907229] [2020-12-23 13:43:33,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:43:33,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:33,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:43:33,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:43:33,745 INFO L87 Difference]: Start difference. First operand 150 states and 339 transitions. Second operand 5 states. [2020-12-23 13:43:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:33,804 INFO L93 Difference]: Finished difference Result 137 states and 280 transitions. [2020-12-23 13:43:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:43:33,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-23 13:43:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:33,806 INFO L225 Difference]: With dead ends: 137 [2020-12-23 13:43:33,807 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 13:43:33,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:43:33,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 13:43:33,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-23 13:43:33,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 13:43:33,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 220 transitions. [2020-12-23 13:43:33,811 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 220 transitions. Word has length 13 [2020-12-23 13:43:33,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:33,812 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 220 transitions. [2020-12-23 13:43:33,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:43:33,812 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 220 transitions. [2020-12-23 13:43:33,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 13:43:33,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:33,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:33,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:43:33,813 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:33,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:33,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1583313088, now seen corresponding path program 1 times [2020-12-23 13:43:33,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:33,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466362997] [2020-12-23 13:43:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:33,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466362997] [2020-12-23 13:43:33,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:33,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:43:33,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156142374] [2020-12-23 13:43:33,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:43:33,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:33,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:43:33,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:43:33,898 INFO L87 Difference]: Start difference. First operand 109 states and 220 transitions. Second operand 6 states. [2020-12-23 13:43:33,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:33,973 INFO L93 Difference]: Finished difference Result 98 states and 196 transitions. [2020-12-23 13:43:33,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:43:33,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-23 13:43:33,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:33,976 INFO L225 Difference]: With dead ends: 98 [2020-12-23 13:43:33,977 INFO L226 Difference]: Without dead ends: 81 [2020-12-23 13:43:33,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:43:33,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-23 13:43:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2020-12-23 13:43:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-23 13:43:33,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 157 transitions. [2020-12-23 13:43:33,981 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 157 transitions. Word has length 15 [2020-12-23 13:43:33,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:33,981 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 157 transitions. [2020-12-23 13:43:33,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:43:33,982 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 157 transitions. [2020-12-23 13:43:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 13:43:33,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:43:33,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:43:33,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:43:33,983 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:43:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:43:33,983 INFO L82 PathProgramCache]: Analyzing trace with hash 414255100, now seen corresponding path program 1 times [2020-12-23 13:43:33,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:43:33,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192695360] [2020-12-23 13:43:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:43:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:43:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 13:43:34,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192695360] [2020-12-23 13:43:34,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:43:34,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:43:34,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924286483] [2020-12-23 13:43:34,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:43:34,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:43:34,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:43:34,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:43:34,052 INFO L87 Difference]: Start difference. First operand 77 states and 157 transitions. Second operand 5 states. [2020-12-23 13:43:34,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:43:34,090 INFO L93 Difference]: Finished difference Result 76 states and 156 transitions. [2020-12-23 13:43:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:43:34,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-23 13:43:34,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:43:34,091 INFO L225 Difference]: With dead ends: 76 [2020-12-23 13:43:34,091 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:43:34,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-23 13:43:34,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:43:34,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:43:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:43:34,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:43:34,093 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-23 13:43:34,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:43:34,093 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:43:34,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:43:34,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:43:34,093 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:43:34,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:43:34,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:43:34 BasicIcfg [2020-12-23 13:43:34,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:43:34,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:43:34,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:43:34,098 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:43:34,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:43:28" (3/4) ... [2020-12-23 13:43:34,103 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:43:34,110 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:43:34,110 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:43:34,111 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:43:34,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:43:34,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:43:34,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:43:34,117 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:43:34,161 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe021_tso.opt.i-witness.graphml [2020-12-23 13:43:34,161 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:43:34,164 INFO L168 Benchmark]: Toolchain (without parser) took 7652.71 ms. Allocated memory was 157.3 MB in the beginning and 238.0 MB in the end (delta: 80.7 MB). Free memory was 131.6 MB in the beginning and 120.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 93.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:34,165 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 157.3 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:43:34,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.16 ms. Allocated memory is still 157.3 MB. Free memory was 131.4 MB in the beginning and 133.9 MB in the end (delta: -2.5 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:34,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.85 ms. Allocated memory is still 157.3 MB. Free memory was 133.9 MB in the beginning and 131.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:34,169 INFO L168 Benchmark]: Boogie Preprocessor took 62.84 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 130.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:34,170 INFO L168 Benchmark]: RCFGBuilder took 584.10 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 108.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:34,171 INFO L168 Benchmark]: TraceAbstraction took 6076.06 ms. Allocated memory was 157.3 MB in the beginning and 238.0 MB in the end (delta: 80.7 MB). Free memory was 107.6 MB in the beginning and 123.9 MB in the end (delta: -16.2 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:34,173 INFO L168 Benchmark]: Witness Printer took 63.57 ms. Allocated memory is still 238.0 MB. Free memory was 123.9 MB in the beginning and 120.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:43:34,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 157.3 MB. Free memory is still 129.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 744.16 ms. Allocated memory is still 157.3 MB. Free memory was 131.4 MB in the beginning and 133.9 MB in the end (delta: -2.5 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 110.85 ms. Allocated memory is still 157.3 MB. Free memory was 133.9 MB in the beginning and 131.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.84 ms. Allocated memory is still 157.3 MB. Free memory was 131.8 MB in the beginning and 130.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 584.10 ms. Allocated memory is still 157.3 MB. Free memory was 130.2 MB in the beginning and 108.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6076.06 ms. Allocated memory was 157.3 MB in the beginning and 238.0 MB in the end (delta: 80.7 MB). Free memory was 107.6 MB in the beginning and 123.9 MB in the end (delta: -16.2 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. * Witness Printer took 63.57 ms. Allocated memory is still 238.0 MB. Free memory was 123.9 MB in the beginning and 120.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 782 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 67 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.7s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2563 MoverChecksTotal - PositiveResult [Line: 18]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 220 SDtfs, 216 SDslu, 367 SDs, 0 SdLazy, 141 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 196 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 4703 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...