/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-atomic/dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 13:05:42,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 13:05:42,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 13:05:42,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 13:05:42,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 13:05:42,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 13:05:42,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 13:05:42,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 13:05:42,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 13:05:42,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 13:05:42,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 13:05:42,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 13:05:42,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 13:05:42,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 13:05:42,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 13:05:42,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 13:05:42,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 13:05:42,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 13:05:42,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 13:05:42,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 13:05:42,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 13:05:42,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 13:05:42,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 13:05:42,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 13:05:42,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 13:05:42,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 13:05:42,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 13:05:42,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 13:05:42,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 13:05:42,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 13:05:42,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 13:05:42,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 13:05:42,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 13:05:42,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 13:05:42,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 13:05:42,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 13:05:42,675 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 13:05:42,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 13:05:42,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 13:05:42,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 13:05:42,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 13:05:42,728 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 13:05:42,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 13:05:42,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 13:05:42,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 13:05:42,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 13:05:42,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 13:05:42,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 13:05:42,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 13:05:42,731 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 13:05:42,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 13:05:42,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 13:05:42,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 13:05:42,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 13:05:42,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 13:05:42,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 13:05:42,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 13:05:42,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 13:05:42,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 13:05:42,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 13:05:42,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 13:05:42,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 13:05:42,734 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 13:05:43,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 13:05:43,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 13:05:43,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 13:05:43,207 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 13:05:43,208 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 13:05:43,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/dekker.i [2020-12-23 13:05:43,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/903df8756/54966eb5707943d29aeb1c0009136b4b/FLAGcc808d6e8 [2020-12-23 13:05:44,015 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 13:05:44,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/pthread-atomic/dekker.i [2020-12-23 13:05:44,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/903df8756/54966eb5707943d29aeb1c0009136b4b/FLAGcc808d6e8 [2020-12-23 13:05:44,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/903df8756/54966eb5707943d29aeb1c0009136b4b [2020-12-23 13:05:44,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 13:05:44,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 13:05:44,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 13:05:44,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 13:05:44,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 13:05:44,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:05:44" (1/1) ... [2020-12-23 13:05:44,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4187b67b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:44, skipping insertion in model container [2020-12-23 13:05:44,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:05:44" (1/1) ... [2020-12-23 13:05:44,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 13:05:44,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 13:05:44,570 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 left hand side expression in assignment: lhs: VariableLHS[~flag1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~flag1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~flag1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~f2~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] [2020-12-23 13:05:44,819 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-atomic/dekker.i[31403,31416] left hand side expression in assignment: lhs: VariableLHS[~turn~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~flag1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~flag2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~flag2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t~1,] left hand side expression in assignment: lhs: VariableLHS[~t~1,] left hand side expression in assignment: lhs: VariableLHS[~flag2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~f1~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] [2020-12-23 13:05:44,841 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-atomic/dekker.i[32483,32496] left hand side expression in assignment: lhs: VariableLHS[~turn~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~flag2~0,GLOBAL] [2020-12-23 13:05:44,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:05:44,865 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 13:05:44,899 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 left hand side expression in assignment: lhs: VariableLHS[~flag1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~flag1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~flag1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~f2~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] [2020-12-23 13:05:44,942 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-atomic/dekker.i[31403,31416] left hand side expression in assignment: lhs: VariableLHS[~turn~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~flag1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~flag2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~flag2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~t~1,] left hand side expression in assignment: lhs: VariableLHS[~t~1,] left hand side expression in assignment: lhs: VariableLHS[~flag2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~f1~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,GLOBAL] [2020-12-23 13:05:44,951 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-atomic/dekker.i[32483,32496] left hand side expression in assignment: lhs: VariableLHS[~turn~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~flag2~0,GLOBAL] [2020-12-23 13:05:44,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 13:05:45,097 INFO L208 MainTranslator]: Completed translation [2020-12-23 13:05:45,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:45 WrapperNode [2020-12-23 13:05:45,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 13:05:45,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 13:05:45,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 13:05:45,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 13:05:45,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:45" (1/1) ... [2020-12-23 13:05:45,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:45" (1/1) ... [2020-12-23 13:05:45,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 13:05:45,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 13:05:45,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 13:05:45,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 13:05:45,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:45" (1/1) ... [2020-12-23 13:05:45,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:45" (1/1) ... [2020-12-23 13:05:45,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:45" (1/1) ... [2020-12-23 13:05:45,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:45" (1/1) ... [2020-12-23 13:05:45,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:45" (1/1) ... [2020-12-23 13:05:45,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:45" (1/1) ... [2020-12-23 13:05:45,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:45" (1/1) ... [2020-12-23 13:05:45,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 13:05:45,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 13:05:45,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 13:05:45,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 13:05:45,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:45" (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 13:05:45,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 13:05:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-12-23 13:05:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-12-23 13:05:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-12-23 13:05:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-12-23 13:05:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 13:05:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-23 13:05:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 13:05:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 13:05:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 13:05:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-23 13:05:45,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 13:05:45,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 13:05:45,376 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 13:05:45,938 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 13:05:45,939 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-23 13:05:45,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:05:45 BoogieIcfgContainer [2020-12-23 13:05:45,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 13:05:45,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 13:05:45,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 13:05:45,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 13:05:45,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:05:44" (1/3) ... [2020-12-23 13:05:45,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47133ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:05:45, skipping insertion in model container [2020-12-23 13:05:45,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:05:45" (2/3) ... [2020-12-23 13:05:45,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47133ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:05:45, skipping insertion in model container [2020-12-23 13:05:45,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:05:45" (3/3) ... [2020-12-23 13:05:45,952 INFO L111 eAbstractionObserver]: Analyzing ICFG dekker.i [2020-12-23 13:05:45,961 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-23 13:05:45,962 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 13:05:45,969 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 13:05:45,970 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-23 13:05:46,007 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,007 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,007 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,008 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,008 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,008 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,008 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,009 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,009 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,009 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,009 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,010 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,010 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,010 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,011 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,011 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,011 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,011 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,012 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,012 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,012 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,013 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,013 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,013 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,013 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,013 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,014 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,014 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,014 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,014 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,015 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,015 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,015 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,016 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,017 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,017 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,017 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,018 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,018 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,019 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,019 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,019 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,019 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,020 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,020 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,020 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,021 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,021 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,021 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,021 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,025 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,025 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,027 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,028 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,028 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,028 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,028 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,029 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,035 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,035 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,035 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,036 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,036 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,036 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-23 13:05:46,047 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-12-23 13:05:46,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-23 13:05:46,114 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 13:05:46,115 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 13:05:46,115 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 13:05:46,115 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 13:05:46,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 13:05:46,116 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 13:05:46,116 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 13:05:46,116 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 13:05:46,142 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-23 13:05:46,144 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 96 transitions, 214 flow [2020-12-23 13:05:46,149 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 96 transitions, 214 flow [2020-12-23 13:05:46,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 96 transitions, 214 flow [2020-12-23 13:05:46,234 INFO L129 PetriNetUnfolder]: 14/96 cut-off events. [2020-12-23 13:05:46,235 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-12-23 13:05:46,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 96 events. 14/96 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 166 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 63. Up to 3 conditions per place. [2020-12-23 13:05:46,257 INFO L116 LiptonReduction]: Number of co-enabled transitions 2028 [2020-12-23 13:05:48,896 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-23 13:05:49,527 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 84 [2020-12-23 13:05:49,663 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-12-23 13:05:49,959 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-12-23 13:05:50,099 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-12-23 13:05:50,115 INFO L131 LiptonReduction]: Checked pairs total: 7289 [2020-12-23 13:05:50,123 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-12-23 13:05:50,138 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 44 transitions, 110 flow [2020-12-23 13:05:50,193 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 389 states. [2020-12-23 13:05:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states. [2020-12-23 13:05:50,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 13:05:50,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:50,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 13:05:50,203 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:05:50,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:50,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1034037831, now seen corresponding path program 1 times [2020-12-23 13:05:50,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:50,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444703433] [2020-12-23 13:05:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:50,499 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 13:05:50,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444703433] [2020-12-23 13:05:50,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:50,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:05:50,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369518854] [2020-12-23 13:05:50,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:05:50,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:50,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:05:50,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:05:50,524 INFO L87 Difference]: Start difference. First operand 389 states. Second operand 3 states. [2020-12-23 13:05:50,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:50,580 INFO L93 Difference]: Finished difference Result 443 states and 1093 transitions. [2020-12-23 13:05:50,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:05:50,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-23 13:05:50,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:50,599 INFO L225 Difference]: With dead ends: 443 [2020-12-23 13:05:50,599 INFO L226 Difference]: Without dead ends: 293 [2020-12-23 13:05:50,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:05:50,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-23 13:05:50,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 275. [2020-12-23 13:05:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-12-23 13:05:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 728 transitions. [2020-12-23 13:05:50,670 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 728 transitions. Word has length 6 [2020-12-23 13:05:50,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:50,671 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 728 transitions. [2020-12-23 13:05:50,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:05:50,671 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 728 transitions. [2020-12-23 13:05:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 13:05:50,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:50,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:50,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 13:05:50,673 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:05:50,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:50,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2002246474, now seen corresponding path program 1 times [2020-12-23 13:05:50,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:50,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224679475] [2020-12-23 13:05:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:50,727 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 13:05:50,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224679475] [2020-12-23 13:05:50,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:50,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 13:05:50,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278261170] [2020-12-23 13:05:50,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 13:05:50,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:50,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 13:05:50,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:05:50,731 INFO L87 Difference]: Start difference. First operand 275 states and 728 transitions. Second operand 3 states. [2020-12-23 13:05:50,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:50,756 INFO L93 Difference]: Finished difference Result 266 states and 687 transitions. [2020-12-23 13:05:50,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 13:05:50,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-23 13:05:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:50,759 INFO L225 Difference]: With dead ends: 266 [2020-12-23 13:05:50,759 INFO L226 Difference]: Without dead ends: 188 [2020-12-23 13:05:50,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 13:05:50,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-23 13:05:50,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-12-23 13:05:50,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-23 13:05:50,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 491 transitions. [2020-12-23 13:05:50,776 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 491 transitions. Word has length 8 [2020-12-23 13:05:50,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:50,776 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 491 transitions. [2020-12-23 13:05:50,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 13:05:50,776 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 491 transitions. [2020-12-23 13:05:50,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:05:50,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:50,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:50,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 13:05:50,779 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:05:50,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:50,780 INFO L82 PathProgramCache]: Analyzing trace with hash -360489977, now seen corresponding path program 1 times [2020-12-23 13:05:50,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:50,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063591167] [2020-12-23 13:05:50,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:50,865 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 13:05:50,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063591167] [2020-12-23 13:05:50,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:50,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:05:50,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464826771] [2020-12-23 13:05:50,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:05:50,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:50,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:05:50,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:05:50,871 INFO L87 Difference]: Start difference. First operand 188 states and 491 transitions. Second operand 4 states. [2020-12-23 13:05:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:50,930 INFO L93 Difference]: Finished difference Result 258 states and 714 transitions. [2020-12-23 13:05:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:05:50,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:05:50,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:50,934 INFO L225 Difference]: With dead ends: 258 [2020-12-23 13:05:50,934 INFO L226 Difference]: Without dead ends: 234 [2020-12-23 13:05:50,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:05:50,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-12-23 13:05:50,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 186. [2020-12-23 13:05:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-23 13:05:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 485 transitions. [2020-12-23 13:05:50,950 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 485 transitions. Word has length 11 [2020-12-23 13:05:50,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:50,951 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 485 transitions. [2020-12-23 13:05:50,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:05:50,951 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 485 transitions. [2020-12-23 13:05:50,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 13:05:50,953 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 13:05:50,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 13:05:50,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 13:05:50,953 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 13:05:50,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 13:05:50,954 INFO L82 PathProgramCache]: Analyzing trace with hash 411645011, now seen corresponding path program 2 times [2020-12-23 13:05:50,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 13:05:50,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191995053] [2020-12-23 13:05:50,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 13:05:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 13:05:51,037 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 13:05:51,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191995053] [2020-12-23 13:05:51,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 13:05:51,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 13:05:51,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196840599] [2020-12-23 13:05:51,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 13:05:51,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 13:05:51,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 13:05:51,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 13:05:51,040 INFO L87 Difference]: Start difference. First operand 186 states and 485 transitions. Second operand 4 states. [2020-12-23 13:05:51,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 13:05:51,096 INFO L93 Difference]: Finished difference Result 212 states and 636 transitions. [2020-12-23 13:05:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 13:05:51,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-23 13:05:51,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 13:05:51,097 INFO L225 Difference]: With dead ends: 212 [2020-12-23 13:05:51,097 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 13:05:51,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 13:05:51,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 13:05:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 13:05:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 13:05:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 13:05:51,099 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-23 13:05:51,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 13:05:51,099 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 13:05:51,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 13:05:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 13:05:51,100 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 13:05:51,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 13:05:51,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 01:05:51 BasicIcfg [2020-12-23 13:05:51,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 13:05:51,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 13:05:51,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 13:05:51,106 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 13:05:51,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:05:45" (3/4) ... [2020-12-23 13:05:51,110 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 13:05:51,117 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2020-12-23 13:05:51,117 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-12-23 13:05:51,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-23 13:05:51,123 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 13:05:51,123 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:05:51,123 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 13:05:51,165 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/pthread-atomic/dekker.i-witness.graphml [2020-12-23 13:05:51,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 13:05:51,167 INFO L168 Benchmark]: Toolchain (without parser) took 6865.84 ms. Allocated memory was 155.2 MB in the beginning and 249.6 MB in the end (delta: 94.4 MB). Free memory was 128.6 MB in the beginning and 216.1 MB in the end (delta: -87.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:51,168 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:05:51,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 792.61 ms. Allocated memory is still 155.2 MB. Free memory was 128.5 MB in the beginning and 132.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:51,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.60 ms. Allocated memory is still 155.2 MB. Free memory was 132.9 MB in the beginning and 130.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:51,170 INFO L168 Benchmark]: Boogie Preprocessor took 68.85 ms. Allocated memory is still 155.2 MB. Free memory was 130.8 MB in the beginning and 129.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:51,170 INFO L168 Benchmark]: RCFGBuilder took 673.57 ms. Allocated memory is still 155.2 MB. Free memory was 129.3 MB in the beginning and 106.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:51,171 INFO L168 Benchmark]: TraceAbstraction took 5160.96 ms. Allocated memory was 155.2 MB in the beginning and 249.6 MB in the end (delta: 94.4 MB). Free memory was 105.7 MB in the beginning and 218.7 MB in the end (delta: -113.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 13:05:51,172 INFO L168 Benchmark]: Witness Printer took 60.37 ms. Allocated memory is still 249.6 MB. Free memory was 218.7 MB in the beginning and 216.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 13:05:51,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 792.61 ms. Allocated memory is still 155.2 MB. Free memory was 128.5 MB in the beginning and 132.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 94.60 ms. Allocated memory is still 155.2 MB. Free memory was 132.9 MB in the beginning and 130.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 68.85 ms. Allocated memory is still 155.2 MB. Free memory was 130.8 MB in the beginning and 129.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 673.57 ms. Allocated memory is still 155.2 MB. Free memory was 129.3 MB in the beginning and 106.2 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5160.96 ms. Allocated memory was 155.2 MB in the beginning and 249.6 MB in the end (delta: 94.4 MB). Free memory was 105.7 MB in the beginning and 218.7 MB in the end (delta: -113.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 60.37 ms. Allocated memory is still 249.6 MB. Free memory was 218.7 MB in the beginning and 216.1 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 1264 VarBasedMoverChecksPositive, 67 VarBasedMoverChecksNegative, 24 SemBasedMoverChecksPositive, 43 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 252 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.9s, 88 PlacesBefore, 42 PlacesAfterwards, 96 TransitionsBefore, 44 TransitionsAfterwards, 2028 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 13 ConcurrentYvCompositions, 6 ChoiceCompositions, 70 TotalNumberOfCompositions, 7289 MoverChecksTotal - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: 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 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 82 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 199 SDtfs, 139 SDslu, 155 SDs, 0 SdLazy, 59 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 66 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 518 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...