java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --sifa.abstract.domain ExplicitValueDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.intern.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_DDA -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 20:24:04,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 20:24:04,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 20:24:04,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 20:24:04,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 20:24:04,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 20:24:04,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 20:24:04,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 20:24:04,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 20:24:04,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 20:24:04,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 20:24:04,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 20:24:04,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 20:24:04,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 20:24:04,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 20:24:04,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 20:24:04,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 20:24:04,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 20:24:04,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 20:24:04,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 20:24:04,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 20:24:04,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 20:24:04,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 20:24:04,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 20:24:04,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 20:24:04,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 20:24:04,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 20:24:04,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 20:24:04,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 20:24:04,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 20:24:04,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 20:24:04,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 20:24:04,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 20:24:04,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 20:24:04,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 20:24:04,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 20:24:04,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 20:24:04,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 20:24:04,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 20:24:04,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 20:24:04,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 20:24:04,687 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-16 20:24:04,705 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 20:24:04,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 20:24:04,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 20:24:04,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 20:24:04,709 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 20:24:04,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 20:24:04,710 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 20:24:04,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 20:24:04,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 20:24:04,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 20:24:04,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 20:24:04,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 20:24:04,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 20:24:04,712 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 20:24:04,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 20:24:04,713 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 20:24:04,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 20:24:04,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 20:24:04,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 20:24:04,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 20:24:04,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 20:24:04,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 20:24:04,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 20:24:04,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 20:24:04,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 20:24:04,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 20:24:04,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 20:24:04,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 20:24:04,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> ExplicitValueDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Intern Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_DDA [2019-09-16 20:24:04,777 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 20:24:04,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 20:24:04,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 20:24:04,802 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 20:24:04,803 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 20:24:04,803 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2019-09-16 20:24:04,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/968a469b3/582a1171683e44679e6f1f51b28842a1/FLAGb9d548069 [2019-09-16 20:24:05,313 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 20:24:05,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2019-09-16 20:24:05,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/968a469b3/582a1171683e44679e6f1f51b28842a1/FLAGb9d548069 [2019-09-16 20:24:05,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/968a469b3/582a1171683e44679e6f1f51b28842a1 [2019-09-16 20:24:05,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 20:24:05,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 20:24:05,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 20:24:05,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 20:24:05,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 20:24:05,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 08:24:05" (1/1) ... [2019-09-16 20:24:05,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3740c23f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 08:24:05, skipping insertion in model container [2019-09-16 20:24:05,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 08:24:05" (1/1) ... [2019-09-16 20:24:05,695 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 20:24:05,739 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 20:24:05,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 20:24:05,964 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 20:24:06,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 20:24:06,107 INFO L192 MainTranslator]: Completed translation [2019-09-16 20:24:06,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 08:24:06 WrapperNode [2019-09-16 20:24:06,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 20:24:06,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 20:24:06,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 20:24:06,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 20:24:06,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 08:24:06" (1/1) ... [2019-09-16 20:24:06,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 08:24:06" (1/1) ... [2019-09-16 20:24:06,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 08:24:06" (1/1) ... [2019-09-16 20:24:06,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 08:24:06" (1/1) ... [2019-09-16 20:24:06,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 08:24:06" (1/1) ... [2019-09-16 20:24:06,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 08:24:06" (1/1) ... [2019-09-16 20:24:06,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 08:24:06" (1/1) ... [2019-09-16 20:24:06,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 20:24:06,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 20:24:06,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 20:24:06,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 20:24:06,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 08:24:06" (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 [2019-09-16 20:24:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 20:24:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 20:24:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-09-16 20:24:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2019-09-16 20:24:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2019-09-16 20:24:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2019-09-16 20:24:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2019-09-16 20:24:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2019-09-16 20:24:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-09-16 20:24:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-09-16 20:24:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-09-16 20:24:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-09-16 20:24:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-09-16 20:24:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-09-16 20:24:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 20:24:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 20:24:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 20:24:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-09-16 20:24:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2019-09-16 20:24:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2019-09-16 20:24:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2019-09-16 20:24:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2019-09-16 20:24:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2019-09-16 20:24:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-09-16 20:24:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-09-16 20:24:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-09-16 20:24:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-09-16 20:24:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-09-16 20:24:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-09-16 20:24:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 20:24:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 20:24:06,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 20:24:06,790 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 20:24:06,790 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-16 20:24:06,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 08:24:06 BoogieIcfgContainer [2019-09-16 20:24:06,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 20:24:06,792 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-16 20:24:06,792 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-16 20:24:06,793 INFO L275 PluginConnector]: Sifa initialized [2019-09-16 20:24:06,794 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 08:24:06" (1/1) ... [2019-09-16 20:24:06,794 INFO L79 SifaObserver]: Intern domains=ExplicitValueDomain;IntervalDomain ♦ Abstract Domain=ExplicitValueDomain ♦ Abstract when formula's dag size exceeds (negative numbers disable this limit)=-1 ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=2 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ Abstract when formula has more disjuncts than (negative numbers disable this limit)=8 ♦ Call Summarizer=TopInputCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ Simplification Technique=SIMPLIFY_DDA ♦ Intern Fluid=SizeLimitFluid [2019-09-16 20:24:06,817 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-16 20:24:06,818 INFO L169 IcfgInterpreter]: Building call graph [2019-09-16 20:24:06,826 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-16 20:24:06,836 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-16 20:24:06,838 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-16 20:24:07,012 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 62 for LOIs [2019-09-16 20:24:07,086 INFO L199 IcfgInterpreter]: Interpreting procedure start_simulation with input of size 60 for LOIs [2019-09-16 20:24:07,887 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2019-09-16 20:24:08,331 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2019-09-16 20:24:08,473 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2019-09-16 20:24:08,624 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2019-09-16 20:24:10,071 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2019-09-16 20:24:10,409 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2019-09-16 20:24:10,703 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-16 20:24:10,968 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2019-09-16 20:24:11,270 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2019-09-16 20:24:11,446 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2019-09-16 20:24:11,779 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2019-09-16 20:24:11,981 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2019-09-16 20:24:12,193 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-16 20:24:12,404 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2019-09-16 20:24:12,571 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2019-09-16 20:24:13,035 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2019-09-16 20:24:13,336 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2019-09-16 20:24:13,609 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-16 20:24:13,821 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2019-09-16 20:24:14,085 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2019-09-16 20:24:14,236 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2019-09-16 20:24:14,409 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2019-09-16 20:24:14,564 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2019-09-16 20:24:14,714 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2019-09-16 20:24:14,911 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-16 20:24:15,147 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2019-09-16 20:24:15,757 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2019-09-16 20:24:16,038 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2019-09-16 20:24:16,323 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-16 20:24:16,583 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2019-09-16 20:24:16,864 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2019-09-16 20:24:17,019 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2019-09-16 20:24:17,240 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2019-09-16 20:24:17,396 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2019-09-16 20:24:17,553 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2019-09-16 20:24:17,762 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-16 20:24:18,668 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2019-09-16 20:24:18,948 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2019-09-16 20:24:19,245 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2019-09-16 20:24:19,446 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2019-09-16 20:24:19,714 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2019-09-16 20:24:19,868 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2019-09-16 20:24:20,032 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2019-09-16 20:24:20,186 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2019-09-16 20:24:20,338 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2019-09-16 20:24:20,535 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2019-09-16 20:24:20,971 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 62 [2019-09-16 20:24:21,045 INFO L199 IcfgInterpreter]: Interpreting procedure eval with input of size 60 for LOIs [2019-09-16 20:24:21,348 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2019-09-16 20:24:21,952 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2019-09-16 20:24:22,155 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-09-16 20:24:22,592 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 81 [2019-09-16 20:24:22,818 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-09-16 20:24:23,497 WARN L191 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 92 [2019-09-16 20:24:23,817 WARN L191 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-16 20:24:24,488 WARN L191 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 92 [2019-09-16 20:24:24,851 WARN L191 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-16 20:24:25,584 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 98 [2019-09-16 20:24:25,928 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2019-09-16 20:24:26,275 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 70 [2019-09-16 20:24:26,414 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2019-09-16 20:24:27,290 WARN L191 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 107 [2019-09-16 20:24:27,706 WARN L191 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-16 20:24:28,438 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 107 [2019-09-16 20:24:28,797 WARN L191 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-16 20:24:29,154 WARN L191 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2019-09-16 20:24:29,293 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2019-09-16 20:24:30,068 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 98 [2019-09-16 20:24:30,386 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2019-09-16 20:24:30,743 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 70 [2019-09-16 20:24:30,886 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2019-09-16 20:24:31,741 WARN L191 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 107 [2019-09-16 20:24:32,161 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-16 20:24:33,257 WARN L191 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 122 DAG size of output: 107 [2019-09-16 20:24:33,600 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-16 20:24:34,006 WARN L191 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2019-09-16 20:24:34,168 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2019-09-16 20:24:34,960 WARN L191 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 97 [2019-09-16 20:24:35,302 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-16 20:24:36,030 WARN L191 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 97 [2019-09-16 20:24:36,368 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-16 20:24:36,818 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2019-09-16 20:24:37,032 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2019-09-16 20:24:37,593 WARN L191 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2019-09-16 20:24:38,066 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-16 20:24:38,306 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-16 20:24:38,616 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2019-09-16 20:24:38,877 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2019-09-16 20:24:39,097 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2019-09-16 20:24:39,376 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2019-09-16 20:24:39,401 INFO L199 IcfgInterpreter]: Interpreting procedure do_read_c with input of size 27 for LOIs [2019-09-16 20:24:39,869 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2019-09-16 20:24:40,038 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2019-09-16 20:24:40,228 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-16 20:24:40,456 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2019-09-16 20:24:40,654 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-16 20:24:40,872 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-16 20:24:41,105 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2019-09-16 20:24:41,151 INFO L199 IcfgInterpreter]: Interpreting procedure error with input of size 40 for LOIs [2019-09-16 20:24:41,243 INFO L183 IcfgInterpreter]: Interpretation finished [2019-09-16 20:24:41,244 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-09-16 20:24:41,247 INFO L193 IcfgInterpreter]: Reachable states at location errorErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 1481#(or (and (= ~q_read_ev~0 2) (or (not (= ~c_dr_pc~0 1)) (= ~c_dr_st~0 0) (not (= ~q_write_ev~0 1))) (or (and (= 0 ~p_dw_st~0) (and (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0))) (and (and (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0)) (not (= 1 ~p_dw_pc~0)))) (not (= ~c_num_read~0 ~p_num_write~0))) (and (= ~q_read_ev~0 2) (and (or (= 0 ~p_dw_st~0) (not (= 1 ~p_dw_pc~0))) (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0)) (or (not (= ~c_dr_pc~0 1)) (= ~c_dr_st~0 0) (not (= ~q_write_ev~0 1))) (not (= ~c_last_read~0 ~p_last_write~0)))) [2019-09-16 20:24:41,263 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-09-16 20:24:41,263 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-09-16 20:24:41,265 INFO L168 Benchmark]: Toolchain (without parser) took 35585.66 ms. Allocated memory was 131.6 MB in the beginning and 521.7 MB in the end (delta: 390.1 MB). Free memory was 87.2 MB in the beginning and 363.6 MB in the end (delta: -276.4 MB). Peak memory consumption was 113.7 MB. Max. memory is 7.1 GB. [2019-09-16 20:24:41,266 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 131.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 20:24:41,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.31 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 86.8 MB in the beginning and 175.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2019-09-16 20:24:41,267 INFO L168 Benchmark]: Boogie Preprocessor took 37.31 ms. Allocated memory is still 198.7 MB. Free memory was 175.4 MB in the beginning and 172.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-09-16 20:24:41,268 INFO L168 Benchmark]: RCFGBuilder took 645.42 ms. Allocated memory is still 198.7 MB. Free memory was 172.9 MB in the beginning and 136.0 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2019-09-16 20:24:41,269 INFO L168 Benchmark]: Sifa took 34470.95 ms. Allocated memory was 198.7 MB in the beginning and 521.7 MB in the end (delta: 323.0 MB). Free memory was 136.0 MB in the beginning and 363.6 MB in the end (delta: -227.5 MB). Peak memory consumption was 95.4 MB. Max. memory is 7.1 GB. [2019-09-16 20:24:41,273 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 131.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 428.31 ms. Allocated memory was 131.6 MB in the beginning and 198.7 MB in the end (delta: 67.1 MB). Free memory was 86.8 MB in the beginning and 175.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.31 ms. Allocated memory is still 198.7 MB. Free memory was 175.4 MB in the beginning and 172.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 645.42 ms. Allocated memory is still 198.7 MB. Free memory was 172.9 MB in the beginning and 136.0 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * Sifa took 34470.95 ms. Allocated memory was 198.7 MB in the beginning and 521.7 MB in the end (delta: 323.0 MB). Free memory was 136.0 MB in the beginning and 363.6 MB in the end (delta: -227.5 MB). Peak memory consumption was 95.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.sifa: - StatisticsResult: Symbolic Interpretation with Fluid Abstractions OVERALL_TIME[ms]: 34430, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 965, DAG_INTERPRETER_EARLY_EXITS: 42, TOOLS_POST_APPLICATIONS: 701, TOOLS_POST_TIME[ms]: 264, TOOLS_POST_CALL_APPLICATIONS: 164, TOOLS_POST_CALL_TIME[ms]: 300, TOOLS_POST_RETURN_APPLICATIONS: 158, TOOLS_POST_RETURN_TIME[ms]: 150, TOOLS_QUANTIFIERELIM_APPLICATIONS: 1000, TOOLS_QUANTIFIERELIM_TIME[ms]: 500, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 16, FLUID_QUERY_TIME[ms]: 25, FLUID_QUERIES: 1056, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 203, DOMAIN_JOIN_TIME[ms]: 29765, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 7, DOMAIN_WIDEN_TIME[ms]: 3288, DOMAIN_ISSUBSETEQ_APPLICATIONS: 91, DOMAIN_ISSUBSETEQ_TIME[ms]: 45, DOMAIN_ISBOTTOM_APPLICATIONS: 165, DOMAIN_ISBOTTOM_TIME[ms]: 401, LOOP_SUMMARIZER_APPLICATIONS: 84, LOOP_SUMMARIZER_CACHE_MISSES: 84, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 29316, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 29315, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 91, CALL_SUMMARIZER_APPLICATIONS: 158, CALL_SUMMARIZER_CACHE_MISSES: 14, CALL_SUMMARIZER_OVERALL_TIME[ms]: 13840, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 13839, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 6, DAG_COMPRESSION_TIME[ms]: 49, DAG_COMPRESSION_PROCESSED_NODES: 709, DAG_COMPRESSION_RETAINED_NODES: 320 - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 1481#(or (and (= ~q_read_ev~0 2) (or (not (= ~c_dr_pc~0 1)) (= ~c_dr_st~0 0) (not (= ~q_write_ev~0 1))) (or (and (= 0 ~p_dw_st~0) (and (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0))) (and (and (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0)) (not (= 1 ~p_dw_pc~0)))) (not (= ~c_num_read~0 ~p_num_write~0))) (and (= ~q_read_ev~0 2) (and (or (= 0 ~p_dw_st~0) (not (= 1 ~p_dw_pc~0))) (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0)) (or (not (= ~c_dr_pc~0 1)) (= ~c_dr_st~0 0) (not (= ~q_write_ev~0 1))) (not (= ~c_last_read~0 ~p_last_write~0)))). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...