/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/safe013_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:40:46,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:40:46,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:40:46,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:40:46,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:40:46,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:40:46,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:40:46,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:40:46,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:40:46,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:40:46,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:40:46,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:40:46,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:40:46,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:40:46,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:40:46,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:40:46,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:40:46,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:40:46,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:40:46,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:40:46,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:40:46,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:40:46,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:40:46,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:40:46,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 13:40:46,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 13:40:46,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 13:40:46,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 13:40:46,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 13:40:46,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 13:40:46,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:40:46,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:40:46,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:40:46,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:40:46,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:40:46,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:40:46,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:40:46,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:40:46,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:40:46,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:40:46,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:40:46,982 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 13:40:47,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:40:47,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:40:47,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:40:47,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:40:47,009 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:40:47,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:40:47,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:40:47,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:40:47,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:40:47,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:40:47,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:40:47,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:40:47,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:40:47,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:40:47,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:40:47,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:40:47,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:40:47,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:40:47,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:40:47,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:40:47,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:40:47,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:40:47,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:40:47,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:40:47,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:40:47,015 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:40:47,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:40:47,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:40:47,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:40:47,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:40:47,471 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:40:47,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2020-12-23 13:40:47,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9821c08ab/7c63d09f82dc42f8bbea7c45608cf6cb/FLAG051e2597d [2020-12-23 13:40:48,279 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:40:48,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i [2020-12-23 13:40:48,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9821c08ab/7c63d09f82dc42f8bbea7c45608cf6cb/FLAG051e2597d [2020-12-23 13:40:48,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/9821c08ab/7c63d09f82dc42f8bbea7c45608cf6cb [2020-12-23 13:40:48,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:40:48,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:40:48,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:40:48,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:40:48,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:40:48,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:40:48" (1/1) ... [2020-12-23 13:40:48,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29895cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:48, skipping insertion in model container [2020-12-23 13:40:48,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:40:48" (1/1) ... [2020-12-23 13:40:48,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:40:48,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:40:48,827 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/safe013_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~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[~z~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$tmp_guard1~0,GLOBAL] [2020-12-23 13:40:49,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:40:49,070 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:40:49,087 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe013_tso.opt.i[949,962] left hand side expression in assignment: lhs: VariableLHS[~z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p0_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~y~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_p2_EAX~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~z~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~__unbuffered_cnt~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard0~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main$tmp_guard1~0,GLOBAL] [2020-12-23 13:40:49,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:40:49,290 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:40:49,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:49 WrapperNode [2020-12-23 13:40:49,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:40:49,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:40:49,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:40:49,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:40:49,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:49" (1/1) ... [2020-12-23 13:40:49,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:49" (1/1) ... [2020-12-23 13:40:49,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:40:49,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:40:49,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:40:49,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:40:49,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:49" (1/1) ... [2020-12-23 13:40:49,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:49" (1/1) ... [2020-12-23 13:40:49,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:49" (1/1) ... [2020-12-23 13:40:49,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:49" (1/1) ... [2020-12-23 13:40:49,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:49" (1/1) ... [2020-12-23 13:40:49,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:49" (1/1) ... [2020-12-23 13:40:49,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:49" (1/1) ... [2020-12-23 13:40:49,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:40:49,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:40:49,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:40:49,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:40:49,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:49" (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 13:40:49,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:40:49,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:40:49,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:40:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:40:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-23 13:40:49,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-23 13:40:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-23 13:40:49,511 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-23 13:40:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-23 13:40:49,512 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-23 13:40:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:40:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:40:49,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:40:49,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:40:49,514 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 13:40:50,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:40:50,023 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 13:40:50,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:40:50 BoogieIcfgContainer [2020-12-23 13:40:50,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:40:50,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:40:50,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:40:50,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:40:50,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:40:48" (1/3) ... [2020-12-23 13:40:50,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f248d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:40:50, skipping insertion in model container [2020-12-23 13:40:50,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:40:49" (2/3) ... [2020-12-23 13:40:50,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f248d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:40:50, skipping insertion in model container [2020-12-23 13:40:50,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:40:50" (3/3) ... [2020-12-23 13:40:50,040 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.opt.i [2020-12-23 13:40:50,048 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:40:50,048 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:40:50,053 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 13:40:50,054 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:40:50,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,107 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,107 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,108 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,108 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,109 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,111 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,111 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,111 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,112 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,112 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,112 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,112 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,112 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,113 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,115 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,115 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,115 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,116 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,118 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,119 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,119 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,119 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,120 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,120 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,120 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,121 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,123 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,125 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,125 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,133 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,134 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,134 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,135 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,143 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,144 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,144 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:40:50,147 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-23 13:40:50,169 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-23 13:40:50,210 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:40:50,210 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:40:50,210 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:40:50,211 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:40:50,211 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:40:50,211 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:40:50,211 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:40:50,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:40:50,230 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:40:50,233 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:40:50,236 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-23 13:40:50,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-23 13:40:50,320 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-23 13:40:50,321 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-23 13:40:50,338 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 54 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 13:40:50,345 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-23 13:40:53,258 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:40:53,368 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-12-23 13:40:53,609 WARN L197 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-23 13:40:53,710 INFO L131 LiptonReduction]: Checked pairs total: 2771 [2020-12-23 13:40:53,711 INFO L133 LiptonReduction]: Total number of compositions: 64 [2020-12-23 13:40:53,719 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-23 13:40:53,768 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-23 13:40:53,770 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-23 13:40:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:40:53,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:53,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:53,780 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:53,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:53,786 INFO L82 PathProgramCache]: Analyzing trace with hash -895973629, now seen corresponding path program 1 times [2020-12-23 13:40:53,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:53,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135125527] [2020-12-23 13:40:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:54,046 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 13:40:54,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135125527] [2020-12-23 13:40:54,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:54,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:40:54,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922247386] [2020-12-23 13:40:54,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 13:40:54,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:54,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 13:40:54,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 13:40:54,078 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-23 13:40:54,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:54,133 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-23 13:40:54,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 13:40:54,135 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 13:40:54,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:54,164 INFO L225 Difference]: With dead ends: 362 [2020-12-23 13:40:54,165 INFO L226 Difference]: Without dead ends: 298 [2020-12-23 13:40:54,166 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 13:40:54,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-23 13:40:54,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-23 13:40:54,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-23 13:40:54,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-23 13:40:54,278 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-23 13:40:54,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:54,286 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-23 13:40:54,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 13:40:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-23 13:40:54,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-23 13:40:54,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:54,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:54,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:40:54,290 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:54,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:54,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2005427324, now seen corresponding path program 1 times [2020-12-23 13:40:54,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:54,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693164828] [2020-12-23 13:40:54,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:54,519 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 13:40:54,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693164828] [2020-12-23 13:40:54,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:54,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:40:54,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949719925] [2020-12-23 13:40:54,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:40:54,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:54,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:40:54,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:40:54,528 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-23 13:40:54,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:54,578 INFO L93 Difference]: Finished difference Result 474 states and 1284 transitions. [2020-12-23 13:40:54,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:40:54,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-23 13:40:54,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:54,582 INFO L225 Difference]: With dead ends: 474 [2020-12-23 13:40:54,583 INFO L226 Difference]: Without dead ends: 354 [2020-12-23 13:40:54,583 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 13:40:54,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-12-23 13:40:54,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 306. [2020-12-23 13:40:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-12-23 13:40:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 854 transitions. [2020-12-23 13:40:54,603 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 854 transitions. Word has length 9 [2020-12-23 13:40:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:54,603 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 854 transitions. [2020-12-23 13:40:54,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:40:54,603 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 854 transitions. [2020-12-23 13:40:54,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:40:54,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:54,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:54,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:40:54,605 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:54,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1664929715, now seen corresponding path program 1 times [2020-12-23 13:40:54,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:54,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132538286] [2020-12-23 13:40:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:54,663 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 13:40:54,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132538286] [2020-12-23 13:40:54,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:54,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:40:54,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927639859] [2020-12-23 13:40:54,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:40:54,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:54,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:40:54,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:40:54,666 INFO L87 Difference]: Start difference. First operand 306 states and 854 transitions. Second operand 4 states. [2020-12-23 13:40:54,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:54,687 INFO L93 Difference]: Finished difference Result 330 states and 888 transitions. [2020-12-23 13:40:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:40:54,688 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-23 13:40:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:54,691 INFO L225 Difference]: With dead ends: 330 [2020-12-23 13:40:54,691 INFO L226 Difference]: Without dead ends: 282 [2020-12-23 13:40:54,691 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 13:40:54,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-12-23 13:40:54,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-12-23 13:40:54,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-12-23 13:40:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 772 transitions. [2020-12-23 13:40:54,702 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 772 transitions. Word has length 10 [2020-12-23 13:40:54,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:54,703 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 772 transitions. [2020-12-23 13:40:54,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:40:54,703 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 772 transitions. [2020-12-23 13:40:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-23 13:40:54,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:54,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:54,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:40:54,740 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:54,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:54,740 INFO L82 PathProgramCache]: Analyzing trace with hash -2038728515, now seen corresponding path program 1 times [2020-12-23 13:40:54,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:54,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160794546] [2020-12-23 13:40:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:54,815 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 13:40:54,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160794546] [2020-12-23 13:40:54,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:54,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:40:54,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212826322] [2020-12-23 13:40:54,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:40:54,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:54,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:40:54,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:40:54,822 INFO L87 Difference]: Start difference. First operand 282 states and 772 transitions. Second operand 5 states. [2020-12-23 13:40:54,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:54,887 INFO L93 Difference]: Finished difference Result 378 states and 968 transitions. [2020-12-23 13:40:54,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:40:54,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-23 13:40:54,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:54,891 INFO L225 Difference]: With dead ends: 378 [2020-12-23 13:40:54,891 INFO L226 Difference]: Without dead ends: 306 [2020-12-23 13:40:54,891 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 13:40:54,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-12-23 13:40:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 258. [2020-12-23 13:40:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-12-23 13:40:54,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 698 transitions. [2020-12-23 13:40:54,902 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 698 transitions. Word has length 10 [2020-12-23 13:40:54,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:54,903 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 698 transitions. [2020-12-23 13:40:54,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:40:54,903 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 698 transitions. [2020-12-23 13:40:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:40:54,910 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:54,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:54,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:40:54,911 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:54,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:54,915 INFO L82 PathProgramCache]: Analyzing trace with hash 73189998, now seen corresponding path program 1 times [2020-12-23 13:40:54,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:54,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975621587] [2020-12-23 13:40:54,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:55,027 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 13:40:55,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975621587] [2020-12-23 13:40:55,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:55,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:40:55,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11418198] [2020-12-23 13:40:55,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:40:55,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:55,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:40:55,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:40:55,031 INFO L87 Difference]: Start difference. First operand 258 states and 698 transitions. Second operand 5 states. [2020-12-23 13:40:55,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:55,085 INFO L93 Difference]: Finished difference Result 314 states and 817 transitions. [2020-12-23 13:40:55,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:40:55,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-23 13:40:55,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:55,087 INFO L225 Difference]: With dead ends: 314 [2020-12-23 13:40:55,087 INFO L226 Difference]: Without dead ends: 166 [2020-12-23 13:40:55,088 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 13:40:55,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-23 13:40:55,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-12-23 13:40:55,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-12-23 13:40:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 406 transitions. [2020-12-23 13:40:55,094 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 406 transitions. Word has length 11 [2020-12-23 13:40:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:55,095 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 406 transitions. [2020-12-23 13:40:55,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:40:55,095 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 406 transitions. [2020-12-23 13:40:55,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 13:40:55,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:55,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:55,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 13:40:55,097 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:55,098 INFO L82 PathProgramCache]: Analyzing trace with hash -803726118, now seen corresponding path program 1 times [2020-12-23 13:40:55,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:55,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828028756] [2020-12-23 13:40:55,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:55,227 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 13:40:55,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828028756] [2020-12-23 13:40:55,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:55,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 13:40:55,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380706315] [2020-12-23 13:40:55,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:40:55,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:55,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:40:55,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:40:55,229 INFO L87 Difference]: Start difference. First operand 166 states and 406 transitions. Second operand 4 states. [2020-12-23 13:40:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:55,260 INFO L93 Difference]: Finished difference Result 186 states and 415 transitions. [2020-12-23 13:40:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 13:40:55,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-23 13:40:55,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:55,262 INFO L225 Difference]: With dead ends: 186 [2020-12-23 13:40:55,262 INFO L226 Difference]: Without dead ends: 142 [2020-12-23 13:40:55,263 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 13:40:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-12-23 13:40:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-12-23 13:40:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-23 13:40:55,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 317 transitions. [2020-12-23 13:40:55,271 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 317 transitions. Word has length 13 [2020-12-23 13:40:55,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:55,271 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 317 transitions. [2020-12-23 13:40:55,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:40:55,271 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 317 transitions. [2020-12-23 13:40:55,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 13:40:55,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:55,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:55,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 13:40:55,272 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:55,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:55,273 INFO L82 PathProgramCache]: Analyzing trace with hash -485202570, now seen corresponding path program 1 times [2020-12-23 13:40:55,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:55,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439204159] [2020-12-23 13:40:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:55,344 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 13:40:55,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439204159] [2020-12-23 13:40:55,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:55,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:40:55,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853101199] [2020-12-23 13:40:55,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:40:55,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:55,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:40:55,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:40:55,348 INFO L87 Difference]: Start difference. First operand 142 states and 317 transitions. Second operand 5 states. [2020-12-23 13:40:55,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:55,390 INFO L93 Difference]: Finished difference Result 135 states and 276 transitions. [2020-12-23 13:40:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:40:55,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-23 13:40:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:55,392 INFO L225 Difference]: With dead ends: 135 [2020-12-23 13:40:55,392 INFO L226 Difference]: Without dead ends: 107 [2020-12-23 13:40:55,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 13:40:55,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-23 13:40:55,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-12-23 13:40:55,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-23 13:40:55,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 216 transitions. [2020-12-23 13:40:55,396 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 216 transitions. Word has length 14 [2020-12-23 13:40:55,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:55,401 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 216 transitions. [2020-12-23 13:40:55,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:40:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 216 transitions. [2020-12-23 13:40:55,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:40:55,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:55,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:55,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 13:40:55,402 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:55,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:55,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1951668266, now seen corresponding path program 1 times [2020-12-23 13:40:55,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:55,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366922638] [2020-12-23 13:40:55,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:55,486 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 13:40:55,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366922638] [2020-12-23 13:40:55,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:55,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:40:55,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210872920] [2020-12-23 13:40:55,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 13:40:55,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:55,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 13:40:55,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:40:55,489 INFO L87 Difference]: Start difference. First operand 107 states and 216 transitions. Second operand 5 states. [2020-12-23 13:40:55,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:55,538 INFO L93 Difference]: Finished difference Result 134 states and 262 transitions. [2020-12-23 13:40:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 13:40:55,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-23 13:40:55,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:55,540 INFO L225 Difference]: With dead ends: 134 [2020-12-23 13:40:55,540 INFO L226 Difference]: Without dead ends: 105 [2020-12-23 13:40:55,540 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 13:40:55,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-12-23 13:40:55,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2020-12-23 13:40:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-12-23 13:40:55,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 166 transitions. [2020-12-23 13:40:55,544 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 166 transitions. Word has length 16 [2020-12-23 13:40:55,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:55,544 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 166 transitions. [2020-12-23 13:40:55,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 13:40:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 166 transitions. [2020-12-23 13:40:55,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:40:55,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:55,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:55,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 13:40:55,545 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:55,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:55,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1052233970, now seen corresponding path program 2 times [2020-12-23 13:40:55,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:55,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111033009] [2020-12-23 13:40:55,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:55,641 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 13:40:55,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111033009] [2020-12-23 13:40:55,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:55,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:40:55,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265912950] [2020-12-23 13:40:55,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:40:55,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:55,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:40:55,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:40:55,645 INFO L87 Difference]: Start difference. First operand 86 states and 166 transitions. Second operand 6 states. [2020-12-23 13:40:55,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:55,707 INFO L93 Difference]: Finished difference Result 115 states and 214 transitions. [2020-12-23 13:40:55,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 13:40:55,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-23 13:40:55,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:55,708 INFO L225 Difference]: With dead ends: 115 [2020-12-23 13:40:55,709 INFO L226 Difference]: Without dead ends: 79 [2020-12-23 13:40:55,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:40:55,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-23 13:40:55,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-12-23 13:40:55,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-23 13:40:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 133 transitions. [2020-12-23 13:40:55,713 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 133 transitions. Word has length 16 [2020-12-23 13:40:55,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:55,713 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 133 transitions. [2020-12-23 13:40:55,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:40:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 133 transitions. [2020-12-23 13:40:55,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 13:40:55,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:40:55,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:40:55,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 13:40:55,714 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:40:55,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:40:55,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1712735852, now seen corresponding path program 1 times [2020-12-23 13:40:55,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:40:55,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878798100] [2020-12-23 13:40:55,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:40:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:40:55,764 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 13:40:55,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878798100] [2020-12-23 13:40:55,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:40:55,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 13:40:55,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759564070] [2020-12-23 13:40:55,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 13:40:55,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:40:55,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 13:40:55,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 13:40:55,767 INFO L87 Difference]: Start difference. First operand 77 states and 133 transitions. Second operand 6 states. [2020-12-23 13:40:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:40:55,810 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-12-23 13:40:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:40:55,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-23 13:40:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:40:55,811 INFO L225 Difference]: With dead ends: 67 [2020-12-23 13:40:55,812 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:40:55,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-23 13:40:55,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:40:55,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:40:55,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:40:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:40:55,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-23 13:40:55,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:40:55,813 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:40:55,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 13:40:55,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:40:55,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:40:55,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 13:40:55,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:40:55 BasicIcfg [2020-12-23 13:40:55,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:40:55,818 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:40:55,818 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:40:55,818 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:40:55,819 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:40:50" (3/4) ... [2020-12-23 13:40:55,822 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:40:55,828 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-23 13:40:55,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-23 13:40:55,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-23 13:40:55,834 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-23 13:40:55,834 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:40:55,834 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:40:55,834 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:40:55,878 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-wmm/safe013_tso.opt.i-witness.graphml [2020-12-23 13:40:55,879 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:40:55,880 INFO L168 Benchmark]: Toolchain (without parser) took 7292.89 ms. Allocated memory was 163.6 MB in the beginning and 250.6 MB in the end (delta: 87.0 MB). Free memory was 137.0 MB in the beginning and 103.1 MB in the end (delta: 33.9 MB). Peak memory consumption was 122.5 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:55,880 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 163.6 MB. Free memory is still 137.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:40:55,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.47 ms. Allocated memory is still 163.6 MB. Free memory was 136.8 MB in the beginning and 140.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:55,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.46 ms. Allocated memory is still 163.6 MB. Free memory was 140.8 MB in the beginning and 139.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:55,882 INFO L168 Benchmark]: Boogie Preprocessor took 53.60 ms. Allocated memory is still 163.6 MB. Free memory was 139.3 MB in the beginning and 137.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:55,883 INFO L168 Benchmark]: RCFGBuilder took 606.35 ms. Allocated memory is still 163.6 MB. Free memory was 137.7 MB in the beginning and 115.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:55,883 INFO L168 Benchmark]: TraceAbstraction took 5787.89 ms. Allocated memory was 163.6 MB in the beginning and 250.6 MB in the end (delta: 87.0 MB). Free memory was 115.1 MB in the beginning and 105.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 97.5 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:55,884 INFO L168 Benchmark]: Witness Printer took 60.69 ms. Allocated memory is still 250.6 MB. Free memory was 105.7 MB in the beginning and 103.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:40:55,888 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 163.6 MB. Free memory is still 137.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 700.47 ms. Allocated memory is still 163.6 MB. Free memory was 136.8 MB in the beginning and 140.8 MB in the end (delta: -4.0 MB). Peak memory consumption was 30.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 68.46 ms. Allocated memory is still 163.6 MB. Free memory was 140.8 MB in the beginning and 139.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.60 ms. Allocated memory is still 163.6 MB. Free memory was 139.3 MB in the beginning and 137.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 606.35 ms. Allocated memory is still 163.6 MB. Free memory was 137.7 MB in the beginning and 115.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5787.89 ms. Allocated memory was 163.6 MB in the beginning and 250.6 MB in the end (delta: 87.0 MB). Free memory was 115.1 MB in the beginning and 105.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 97.5 MB. Max. memory is 8.0 GB. * Witness Printer took 60.69 ms. Allocated memory is still 250.6 MB. Free memory was 105.7 MB in the beginning and 103.1 MB in the end (delta: 2.6 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 849 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 32 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 88 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.4s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 64 TotalNumberOfCompositions, 2771 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: 5.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 223 SDtfs, 294 SDslu, 343 SDs, 0 SdLazy, 114 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 117 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 5507 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...