/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/07-return-before-end.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 13:58:21,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 13:58:21,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 13:58:21,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 13:58:21,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 13:58:21,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 13:58:21,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 13:58:21,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 13:58:21,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 13:58:21,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 13:58:21,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 13:58:21,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 13:58:21,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 13:58:21,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 13:58:21,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 13:58:21,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 13:58:21,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 13:58:21,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 13:58:21,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 13:58:21,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 13:58:21,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 13:58:21,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 13:58:21,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 13:58:21,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 13:58:21,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 13:58:21,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 13:58:21,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 13:58:21,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 13:58:21,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 13:58:21,383 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 13:58:21,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 13:58:21,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 13:58:21,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 13:58:21,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 13:58:21,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 13:58:21,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 13:58:21,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 13:58:21,385 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 13:58:21,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 13:58:21,385 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 13:58:21,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 13:58:21,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 13:58:21,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 13:58:21,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 13:58:21,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 13:58:21,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 13:58:21,386 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 13:58:21,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 13:58:21,386 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 13:58:21,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 13:58:21,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 13:58:21,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 13:58:21,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 13:58:21,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 13:58:21,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:58:21,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 13:58:21,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 13:58:21,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 13:58:21,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 13:58:21,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 13:58:21,388 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 13:58:21,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 13:58:21,388 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 13:58:21,388 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 13:58:21,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 13:58:21,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 13:58:21,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 13:58:21,584 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 13:58:21,585 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 13:58:21,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/07-return-before-end.c [2022-01-18 13:58:21,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884a71f71/0f1044e2d9c14cd4b91241fc181a2a2c/FLAG5f2b41b26 [2022-01-18 13:58:21,976 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 13:58:21,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/07-return-before-end.c [2022-01-18 13:58:21,976 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2022-01-18 13:58:21,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884a71f71/0f1044e2d9c14cd4b91241fc181a2a2c/FLAG5f2b41b26 [2022-01-18 13:58:22,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/884a71f71/0f1044e2d9c14cd4b91241fc181a2a2c [2022-01-18 13:58:22,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 13:58:22,008 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 13:58:22,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 13:58:22,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 13:58:22,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 13:58:22,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:58:22" (1/1) ... [2022-01-18 13:58:22,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3264e030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22, skipping insertion in model container [2022-01-18 13:58:22,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:58:22" (1/1) ... [2022-01-18 13:58:22,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 13:58:22,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 13:58:22,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:58:22,179 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 13:58:22,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 13:58:22,195 INFO L208 MainTranslator]: Completed translation [2022-01-18 13:58:22,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22 WrapperNode [2022-01-18 13:58:22,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 13:58:22,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 13:58:22,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 13:58:22,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 13:58:22,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22" (1/1) ... [2022-01-18 13:58:22,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22" (1/1) ... [2022-01-18 13:58:22,218 INFO L137 Inliner]: procedures = 10, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-01-18 13:58:22,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 13:58:22,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 13:58:22,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 13:58:22,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 13:58:22,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22" (1/1) ... [2022-01-18 13:58:22,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22" (1/1) ... [2022-01-18 13:58:22,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22" (1/1) ... [2022-01-18 13:58:22,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22" (1/1) ... [2022-01-18 13:58:22,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22" (1/1) ... [2022-01-18 13:58:22,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22" (1/1) ... [2022-01-18 13:58:22,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22" (1/1) ... [2022-01-18 13:58:22,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 13:58:22,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 13:58:22,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 13:58:22,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 13:58:22,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22" (1/1) ... [2022-01-18 13:58:22,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 13:58:22,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 13:58:22,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 13:58:22,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 13:58:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 13:58:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 13:58:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 13:58:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2022-01-18 13:58:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2022-01-18 13:58:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 13:58:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 13:58:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 13:58:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 13:58:22,291 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 13:58:22,342 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 13:58:22,343 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 13:58:22,431 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 13:58:22,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 13:58:22,440 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 13:58:22,441 WARN L329 CfgBuilder]: Unexpected successor node of atomic block begin: fooEXIT is neither atomic block end nor error location. [2022-01-18 13:58:22,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:58:22 BoogieIcfgContainer [2022-01-18 13:58:22,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 13:58:22,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 13:58:22,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 13:58:22,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 13:58:22,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:58:22" (1/3) ... [2022-01-18 13:58:22,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e9db29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:58:22, skipping insertion in model container [2022-01-18 13:58:22,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:58:22" (2/3) ... [2022-01-18 13:58:22,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e9db29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:58:22, skipping insertion in model container [2022-01-18 13:58:22,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:58:22" (3/3) ... [2022-01-18 13:58:22,447 INFO L111 eAbstractionObserver]: Analyzing ICFG 07-return-before-end.c [2022-01-18 13:58:22,450 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 13:58:22,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 13:58:22,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 13:58:22,450 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 13:58:22,462 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,463 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,463 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,463 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,463 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,463 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,463 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,463 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,464 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,464 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,464 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,464 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,464 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,464 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,465 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,465 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,466 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,466 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,467 WARN L322 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,467 WARN L322 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 13:58:22,467 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 13:58:22,506 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 13:58:22,522 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 13:58:22,522 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-18 13:58:22,528 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 30 transitions, 65 flow [2022-01-18 13:58:22,551 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 13:58:22,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:58:22,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:58:22,557 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:58:22,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:58:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash -666271772, now seen corresponding path program 1 times [2022-01-18 13:58:22,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:58:22,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80487612] [2022-01-18 13:58:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:58:22,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:58:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:58:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:58:22,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:58:22,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80487612] [2022-01-18 13:58:22,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80487612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:58:22,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:58:22,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 13:58:22,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766154317] [2022-01-18 13:58:22,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:58:22,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:58:22,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:58:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:58:22,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:58:22,778 INFO L87 Difference]: Start difference. First operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:22,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:58:22,802 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2022-01-18 13:58:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:58:22,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 13:58:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:58:22,809 INFO L225 Difference]: With dead ends: 36 [2022-01-18 13:58:22,810 INFO L226 Difference]: Without dead ends: 28 [2022-01-18 13:58:22,811 INFO L932 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 [2022-01-18 13:58:22,815 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:58:22,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:58:22,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-18 13:58:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-01-18 13:58:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-01-18 13:58:22,841 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 19 [2022-01-18 13:58:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:58:22,842 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-01-18 13:58:22,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-01-18 13:58:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 13:58:22,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:58:22,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:58:22,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 13:58:22,844 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:58:22,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:58:22,846 INFO L85 PathProgramCache]: Analyzing trace with hash 355159686, now seen corresponding path program 1 times [2022-01-18 13:58:22,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:58:22,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143075306] [2022-01-18 13:58:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:58:22,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:58:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:58:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:58:22,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:58:22,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143075306] [2022-01-18 13:58:22,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143075306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:58:22,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:58:22,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:58:22,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674621898] [2022-01-18 13:58:22,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:58:22,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 13:58:22,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:58:22,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 13:58:22,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 13:58:22,893 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:58:22,916 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-01-18 13:58:22,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 13:58:22,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 13:58:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:58:22,918 INFO L225 Difference]: With dead ends: 29 [2022-01-18 13:58:22,918 INFO L226 Difference]: Without dead ends: 25 [2022-01-18 13:58:22,918 INFO L932 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 [2022-01-18 13:58:22,919 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:58:22,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 30 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:58:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-18 13:58:22,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-18 13:58:22,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-01-18 13:58:22,922 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2022-01-18 13:58:22,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:58:22,922 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-01-18 13:58:22,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:22,922 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-01-18 13:58:22,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 13:58:22,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 13:58:22,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 13:58:22,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 13:58:22,923 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION] === [2022-01-18 13:58:22,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 13:58:22,924 INFO L85 PathProgramCache]: Analyzing trace with hash 331739496, now seen corresponding path program 2 times [2022-01-18 13:58:22,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 13:58:22,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869679145] [2022-01-18 13:58:22,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 13:58:22,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 13:58:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 13:58:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 13:58:22,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 13:58:22,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869679145] [2022-01-18 13:58:22,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869679145] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 13:58:22,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 13:58:22,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 13:58:22,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278014142] [2022-01-18 13:58:22,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 13:58:22,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 13:58:22,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 13:58:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 13:58:22,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:58:22,947 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:22,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 13:58:22,950 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-01-18 13:58:22,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 13:58:22,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 13:58:22,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 13:58:22,951 INFO L225 Difference]: With dead ends: 23 [2022-01-18 13:58:22,951 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 13:58:22,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 13:58:22,952 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 13:58:22,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 13:58:22,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 13:58:22,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 13:58:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 13:58:22,953 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-01-18 13:58:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 13:58:22,954 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 13:58:22,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 13:58:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 13:58:22,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 13:58:22,956 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2022-01-18 13:58:22,956 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining) [2022-01-18 13:58:22,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 13:58:22,958 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2022-01-18 13:58:22,961 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 13:58:22,961 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 13:58:22,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 01:58:22 BasicIcfg [2022-01-18 13:58:22,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 13:58:22,968 INFO L158 Benchmark]: Toolchain (without parser) took 959.20ms. Allocated memory is still 341.8MB. Free memory was 287.2MB in the beginning and 265.9MB in the end (delta: 21.2MB). Peak memory consumption was 21.3MB. Max. memory is 16.0GB. [2022-01-18 13:58:22,968 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 341.8MB. Free memory is still 305.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:58:22,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.40ms. Allocated memory is still 341.8MB. Free memory was 287.0MB in the beginning and 314.1MB in the end (delta: -27.1MB). Peak memory consumption was 17.1MB. Max. memory is 16.0GB. [2022-01-18 13:58:22,968 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.12ms. Allocated memory is still 341.8MB. Free memory was 314.1MB in the beginning and 313.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 13:58:22,968 INFO L158 Benchmark]: Boogie Preprocessor took 16.13ms. Allocated memory is still 341.8MB. Free memory was 313.1MB in the beginning and 312.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 13:58:22,969 INFO L158 Benchmark]: RCFGBuilder took 205.61ms. Allocated memory is still 341.8MB. Free memory was 312.1MB in the beginning and 300.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2022-01-18 13:58:22,969 INFO L158 Benchmark]: TraceAbstraction took 523.97ms. Allocated memory is still 341.8MB. Free memory was 300.5MB in the beginning and 265.9MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2022-01-18 13:58:22,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 341.8MB. Free memory is still 305.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 187.40ms. Allocated memory is still 341.8MB. Free memory was 287.0MB in the beginning and 314.1MB in the end (delta: -27.1MB). Peak memory consumption was 17.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 21.12ms. Allocated memory is still 341.8MB. Free memory was 314.1MB in the beginning and 313.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 16.13ms. Allocated memory is still 341.8MB. Free memory was 313.1MB in the beginning and 312.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 205.61ms. Allocated memory is still 341.8MB. Free memory was 312.1MB in the beginning and 300.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 523.97ms. Allocated memory is still 341.8MB. Free memory was 300.5MB in the beginning and 265.9MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 35]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 35 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 57 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 118 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 13:58:22,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...