/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-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 23:46:29,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 23:46:29,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 23:46:29,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 23:46:29,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 23:46:29,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 23:46:29,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 23:46:29,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 23:46:29,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 23:46:29,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 23:46:29,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 23:46:29,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 23:46:29,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 23:46:29,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 23:46:29,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 23:46:29,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 23:46:29,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 23:46:29,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 23:46:29,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 23:46:29,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 23:46:29,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 23:46:29,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 23:46:29,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 23:46:29,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 23:46:29,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 23:46:29,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 23:46:29,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 23:46:29,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 23:46:29,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 23:46:29,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 23:46:29,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 23:46:29,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 23:46:29,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 23:46:29,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 23:46:29,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 23:46:29,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 23:46:29,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 23:46:29,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 23:46:29,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 23:46:29,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 23:46:29,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 23:46:29,179 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-PN-SemanticLbe.epf [2021-06-10 23:46:29,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 23:46:29,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 23:46:29,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 23:46:29,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 23:46:29,216 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 23:46:29,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 23:46:29,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 23:46:29,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 23:46:29,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 23:46:29,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 23:46:29,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 23:46:29,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 23:46:29,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 23:46:29,218 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 23:46:29,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 23:46:29,218 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 23:46:29,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 23:46:29,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 23:46:29,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 23:46:29,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 23:46:29,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 23:46:29,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:46:29,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 23:46:29,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 23:46:29,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 23:46:29,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 23:46:29,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 23:46:29,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 23:46:29,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 23:46:29,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 23:46:29,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 23:46:29,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 23:46:29,534 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 23:46:29,535 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 23:46:29,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c [2021-06-10 23:46:29,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19306d43f/b611f87089de4b1ab900503f48af3a09/FLAG1d250e616 [2021-06-10 23:46:29,956 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 23:46:29,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/atomic/14b-subsequent-blocks.c [2021-06-10 23:46:29,957 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-10 23:46:29,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19306d43f/b611f87089de4b1ab900503f48af3a09/FLAG1d250e616 [2021-06-10 23:46:30,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19306d43f/b611f87089de4b1ab900503f48af3a09 [2021-06-10 23:46:30,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 23:46:30,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 23:46:30,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 23:46:30,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 23:46:30,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 23:46:30,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:46:30" (1/1) ... [2021-06-10 23:46:30,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c25d7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30, skipping insertion in model container [2021-06-10 23:46:30,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:46:30" (1/1) ... [2021-06-10 23:46:30,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 23:46:30,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 23:46:30,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 23:46:30,200 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 23:46:30,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 23:46:30,260 INFO L208 MainTranslator]: Completed translation [2021-06-10 23:46:30,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30 WrapperNode [2021-06-10 23:46:30,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 23:46:30,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 23:46:30,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 23:46:30,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 23:46:30,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30" (1/1) ... [2021-06-10 23:46:30,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30" (1/1) ... [2021-06-10 23:46:30,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 23:46:30,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 23:46:30,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 23:46:30,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 23:46:30,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30" (1/1) ... [2021-06-10 23:46:30,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30" (1/1) ... [2021-06-10 23:46:30,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30" (1/1) ... [2021-06-10 23:46:30,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30" (1/1) ... [2021-06-10 23:46:30,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30" (1/1) ... [2021-06-10 23:46:30,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30" (1/1) ... [2021-06-10 23:46:30,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30" (1/1) ... [2021-06-10 23:46:30,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 23:46:30,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 23:46:30,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 23:46:30,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 23:46:30,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:46:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 23:46:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 23:46:30,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 23:46:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-10 23:46:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-10 23:46:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 23:46:30,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 23:46:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 23:46:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 23:46:30,380 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 23:46:30,601 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 23:46:30,605 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-10 23:46:30,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:46:30 BoogieIcfgContainer [2021-06-10 23:46:30,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 23:46:30,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 23:46:30,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 23:46:30,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 23:46:30,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 11:46:30" (1/3) ... [2021-06-10 23:46:30,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb975b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:46:30, skipping insertion in model container [2021-06-10 23:46:30,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:46:30" (2/3) ... [2021-06-10 23:46:30,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb975b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:46:30, skipping insertion in model container [2021-06-10 23:46:30,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:46:30" (3/3) ... [2021-06-10 23:46:30,637 INFO L111 eAbstractionObserver]: Analyzing ICFG 14b-subsequent-blocks.c [2021-06-10 23:46:30,642 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 23:46:30,645 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 23:46:30,645 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 23:46:30,669 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,670 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,670 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,670 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,670 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,670 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,670 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,670 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,671 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,671 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,671 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,671 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,672 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,672 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,672 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,672 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:46:30,675 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 23:46:30,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-10 23:46:30,705 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 23:46:30,705 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 23:46:30,706 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 23:46:30,706 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 23:46:30,706 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 23:46:30,706 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 23:46:30,706 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 23:46:30,706 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 23:46:30,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 23 transitions, 51 flow [2021-06-10 23:46:30,730 INFO L129 PetriNetUnfolder]: 0/22 cut-off events. [2021-06-10 23:46:30,730 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:46:30,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 23:46:30,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 23 transitions, 51 flow [2021-06-10 23:46:30,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 17 transitions, 37 flow [2021-06-10 23:46:30,735 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 23:46:30,745 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 21 places, 17 transitions, 37 flow [2021-06-10 23:46:30,749 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 21 places, 17 transitions, 37 flow [2021-06-10 23:46:30,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 17 transitions, 37 flow [2021-06-10 23:46:30,755 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-06-10 23:46:30,755 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:46:30,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 17 events. 0/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 23:46:30,756 INFO L151 LiptonReduction]: Number of co-enabled transitions 32 [2021-06-10 23:46:30,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:30,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:30,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:30,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:30,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:30,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:31,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:31,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:31,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:31,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:31,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:31,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:46:31,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:31,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 23:46:31,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 23:46:31,317 INFO L142 QuantifierPusher]: treesize reduction -2, result has 125.0 percent of original size [2021-06-10 23:46:31,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:46:31,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:31,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:31,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:31,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:46:31,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:31,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 23:46:31,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 23:46:31,629 INFO L163 LiptonReduction]: Checked pairs total: 46 [2021-06-10 23:46:31,629 INFO L165 LiptonReduction]: Total number of compositions: 12 [2021-06-10 23:46:31,631 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 897 [2021-06-10 23:46:31,637 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-06-10 23:46:31,638 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:46:31,638 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:46:31,638 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-06-10 23:46:31,639 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 23:46:31,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:46:31,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2974295, now seen corresponding path program 1 times [2021-06-10 23:46:31,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:46:31,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037931787] [2021-06-10 23:46:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:46:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:46:31,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:31,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:46:31,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:46:31,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:46:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:46:31,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037931787] [2021-06-10 23:46:31,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:46:31,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 23:46:31,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486970730] [2021-06-10 23:46:31,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:46:31,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:46:31,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:46:31,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:46:31,768 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 35 [2021-06-10 23:46:31,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 5 transitions, 13 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-06-10 23:46:31,769 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:46:31,769 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 35 [2021-06-10 23:46:31,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:46:31,784 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-06-10 23:46:31,784 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:46:31,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/9 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-06-10 23:46:31,785 INFO L132 encePairwiseOnDemand]: 32/35 looper letters, 1 selfloop transitions, 3 changer transitions 1/6 dead transitions. [2021-06-10 23:46:31,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 25 flow [2021-06-10 23:46:31,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:46:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:46:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2021-06-10 23:46:31,795 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2021-06-10 23:46:31,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2021-06-10 23:46:31,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2021-06-10 23:46:31,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:46:31,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2021-06-10 23:46:31,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-06-10 23:46:31,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2021-06-10 23:46:31,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2021-06-10 23:46:31,805 INFO L185 Difference]: Start difference. First operand has 9 places, 5 transitions, 13 flow. Second operand 3 states and 69 transitions. [2021-06-10 23:46:31,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 25 flow [2021-06-10 23:46:31,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 24 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:46:31,808 INFO L241 Difference]: Finished difference. Result has 10 places, 5 transitions, 18 flow [2021-06-10 23:46:31,810 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=18, PETRI_PLACES=10, PETRI_TRANSITIONS=5} [2021-06-10 23:46:31,810 INFO L343 CegarLoopForPetriNet]: 9 programPoint places, 1 predicate places. [2021-06-10 23:46:31,810 INFO L480 AbstractCegarLoop]: Abstraction has has 10 places, 5 transitions, 18 flow [2021-06-10 23:46:31,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-06-10 23:46:31,811 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:46:31,811 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-10 23:46:31,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 23:46:31,811 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 23:46:31,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:46:31,812 INFO L82 PathProgramCache]: Analyzing trace with hash 92203331, now seen corresponding path program 1 times [2021-06-10 23:46:31,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:46:31,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776166574] [2021-06-10 23:46:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:46:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-10 23:46:31,824 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-10 23:46:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-10 23:46:31,832 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-10 23:46:31,846 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-10 23:46:31,846 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-10 23:46:31,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 23:46:31,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 11:46:31 BasicIcfg [2021-06-10 23:46:31,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 23:46:31,864 INFO L168 Benchmark]: Toolchain (without parser) took 1850.53 ms. Allocated memory is still 358.6 MB. Free memory was 320.8 MB in the beginning and 212.4 MB in the end (delta: 108.4 MB). Peak memory consumption was 107.7 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:31,864 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 358.6 MB. Free memory is still 339.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:46:31,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.73 ms. Allocated memory is still 358.6 MB. Free memory was 320.6 MB in the beginning and 342.4 MB in the end (delta: -21.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:31,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.74 ms. Allocated memory is still 358.6 MB. Free memory was 342.4 MB in the beginning and 340.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:46:31,866 INFO L168 Benchmark]: Boogie Preprocessor took 18.40 ms. Allocated memory is still 358.6 MB. Free memory was 340.3 MB in the beginning and 339.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:31,870 INFO L168 Benchmark]: RCFGBuilder took 304.79 ms. Allocated memory is still 358.6 MB. Free memory was 339.3 MB in the beginning and 324.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:31,870 INFO L168 Benchmark]: TraceAbstraction took 1239.34 ms. Allocated memory is still 358.6 MB. Free memory was 323.6 MB in the beginning and 212.4 MB in the end (delta: 111.2 MB). Peak memory consumption was 111.1 MB. Max. memory is 16.0 GB. [2021-06-10 23:46:31,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 358.6 MB. Free memory is still 339.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 240.73 ms. Allocated memory is still 358.6 MB. Free memory was 320.6 MB in the beginning and 342.4 MB in the end (delta: -21.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.74 ms. Allocated memory is still 358.6 MB. Free memory was 342.4 MB in the beginning and 340.3 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.40 ms. Allocated memory is still 358.6 MB. Free memory was 340.3 MB in the beginning and 339.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 304.79 ms. Allocated memory is still 358.6 MB. Free memory was 339.3 MB in the beginning and 324.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1239.34 ms. Allocated memory is still 358.6 MB. Free memory was 323.6 MB in the beginning and 212.4 MB in the end (delta: 111.2 MB). Peak memory consumption was 111.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 880.8ms, 21 PlacesBefore, 9 PlacesAfterwards, 17 TransitionsBefore, 5 TransitionsAfterwards, 32 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 46 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 29, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 26, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 26, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 26, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 11, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 47, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 29, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 26, unknown conditional: 0, unknown unconditional: 26] , Statistics on independence cache: Total cache size (in pairs): 34, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - CounterExampleResult [Line: 35]: assertion can be violated assertion can be violated We found a FailurePath: [L15] 0 int x = -1; [L23] 0 pthread_t threadId; [L24] FCALL, FORK 0 pthread_create(&threadId, NULL, &foo, NULL) VAL [arg={0:0}, x=-1] [L27] 0 x = 1 [L28] 0 x = x + 1 VAL [arg={0:0}, x=2] [L18] 1 x = 0 [L19] 1 return (void*)NULL; [L31] 0 x = x + 1 [L32] 0 x = x + 1 [L35] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, arg={0:0}, arg={0:0}, x=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 1.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 1145.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 46.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 929.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.3ms SsaConstructionTime, 22.6ms SatisfiabilityAnalysisTime, 30.4ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 incorrect! Received shutdown request...