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 CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.intern.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-21 10:08:32,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-21 10:08:32,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-21 10:08:32,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-21 10:08:32,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-21 10:08:32,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-21 10:08:32,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-21 10:08:32,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-21 10:08:32,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-21 10:08:32,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-21 10:08:32,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-21 10:08:32,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-21 10:08:32,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-21 10:08:32,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-21 10:08:32,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-21 10:08:32,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-21 10:08:32,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-21 10:08:32,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-21 10:08:32,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-21 10:08:32,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-21 10:08:32,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-21 10:08:32,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-21 10:08:32,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-21 10:08:32,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-21 10:08:32,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-21 10:08:32,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-21 10:08:32,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-21 10:08:32,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-21 10:08:32,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-21 10:08:32,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-21 10:08:32,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-21 10:08:32,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-21 10:08:32,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-21 10:08:32,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-21 10:08:32,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-21 10:08:32,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-21 10:08:32,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-21 10:08:32,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-21 10:08:32,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-21 10:08:32,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-21 10:08:32,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-21 10:08:32,769 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 [2019-09-21 10:08:32,783 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-21 10:08:32,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-21 10:08:32,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-21 10:08:32,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-21 10:08:32,785 INFO L138 SettingsManager]: * Use SBE=true [2019-09-21 10:08:32,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-21 10:08:32,786 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-21 10:08:32,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-21 10:08:32,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-21 10:08:32,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-21 10:08:32,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-21 10:08:32,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-21 10:08:32,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-21 10:08:32,787 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-21 10:08:32,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-21 10:08:32,788 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-21 10:08:32,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-21 10:08:32,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-21 10:08:32,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-21 10:08:32,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-21 10:08:32,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-21 10:08:32,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-21 10:08:32,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-21 10:08:32,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-21 10:08:32,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-21 10:08:32,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-21 10:08:32,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-21 10:08:32,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-21 10:08:32,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain 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_QUICK [2019-09-21 10:08:32,822 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-21 10:08:32,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-21 10:08:32,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-21 10:08:32,840 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-21 10:08:32,841 INFO L275 PluginConnector]: CDTParser initialized [2019-09-21 10:08:32,841 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2019-09-21 10:08:32,899 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ec3de9f/2914a46fdf5e4c85b8e95e68fe96f062/FLAGae26da58c [2019-09-21 10:08:33,386 INFO L306 CDTParser]: Found 1 translation units. [2019-09-21 10:08:33,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-2.c [2019-09-21 10:08:33,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ec3de9f/2914a46fdf5e4c85b8e95e68fe96f062/FLAGae26da58c [2019-09-21 10:08:33,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ec3de9f/2914a46fdf5e4c85b8e95e68fe96f062 [2019-09-21 10:08:33,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-21 10:08:33,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-21 10:08:33,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-21 10:08:33,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-21 10:08:33,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-21 10:08:33,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:08:33" (1/1) ... [2019-09-21 10:08:33,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28dbbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:33, skipping insertion in model container [2019-09-21 10:08:33,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:08:33" (1/1) ... [2019-09-21 10:08:33,754 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-21 10:08:33,806 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-21 10:08:34,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-21 10:08:34,027 INFO L188 MainTranslator]: Completed pre-run [2019-09-21 10:08:34,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-21 10:08:34,179 INFO L192 MainTranslator]: Completed translation [2019-09-21 10:08:34,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:34 WrapperNode [2019-09-21 10:08:34,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-21 10:08:34,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-21 10:08:34,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-21 10:08:34,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-21 10:08:34,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:34" (1/1) ... [2019-09-21 10:08:34,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:34" (1/1) ... [2019-09-21 10:08:34,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:34" (1/1) ... [2019-09-21 10:08:34,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:34" (1/1) ... [2019-09-21 10:08:34,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:34" (1/1) ... [2019-09-21 10:08:34,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:34" (1/1) ... [2019-09-21 10:08:34,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:34" (1/1) ... [2019-09-21 10:08:34,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-21 10:08:34,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-21 10:08:34,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-21 10:08:34,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-21 10:08:34,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:34" (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 [2019-09-21 10:08:34,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-21 10:08:34,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-21 10:08:34,281 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-09-21 10:08:34,282 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2019-09-21 10:08:34,282 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2019-09-21 10:08:34,282 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2019-09-21 10:08:34,282 INFO L138 BoogieDeclarations]: Found implementation of procedure do_write_p [2019-09-21 10:08:34,282 INFO L138 BoogieDeclarations]: Found implementation of procedure do_read_c [2019-09-21 10:08:34,282 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-09-21 10:08:34,282 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-09-21 10:08:34,283 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-09-21 10:08:34,283 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-09-21 10:08:34,283 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-09-21 10:08:34,283 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-09-21 10:08:34,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-21 10:08:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-21 10:08:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-21 10:08:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-09-21 10:08:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2019-09-21 10:08:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2019-09-21 10:08:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2019-09-21 10:08:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure do_write_p [2019-09-21 10:08:34,285 INFO L130 BoogieDeclarations]: Found specification of procedure do_read_c [2019-09-21 10:08:34,285 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-09-21 10:08:34,285 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-09-21 10:08:34,285 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-09-21 10:08:34,285 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-09-21 10:08:34,285 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-09-21 10:08:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-09-21 10:08:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-21 10:08:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-21 10:08:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-21 10:08:34,844 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-21 10:08:34,845 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-21 10:08:34,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:08:34 BoogieIcfgContainer [2019-09-21 10:08:34,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-21 10:08:34,847 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-21 10:08:34,847 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-21 10:08:34,847 INFO L275 PluginConnector]: Sifa initialized [2019-09-21 10:08:34,848 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:08:34" (1/1) ... [2019-09-21 10:08:34,849 INFO L79 SifaObserver]: Intern domains=ExplicitValueDomain;IntervalDomain ♦ Abstract Domain=CompoundDomain ♦ 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_QUICK ♦ Intern Fluid=SizeLimitFluid [2019-09-21 10:08:34,873 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-21 10:08:34,873 INFO L169 IcfgInterpreter]: Building call graph [2019-09-21 10:08:34,882 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-21 10:08:34,891 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-21 10:08:34,892 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-21 10:08:35,173 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 72 for LOIs [2019-09-21 10:08:35,269 INFO L199 IcfgInterpreter]: Interpreting procedure start_simulation with input of size 70 for LOIs [2019-09-21 10:08:38,604 INFO L199 IcfgInterpreter]: Interpreting procedure eval with input of size 77 for LOIs [2019-09-21 10:08:39,487 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 183 [2019-09-21 10:08:39,895 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 200 [2019-09-21 10:08:40,019 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-09-21 10:08:40,216 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 202 [2019-09-21 10:08:40,606 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-09-21 10:08:40,818 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 194 [2019-09-21 10:08:40,951 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 206 [2019-09-21 10:08:41,073 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2019-09-21 10:08:41,246 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 208 [2019-09-21 10:08:41,772 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 200 [2019-09-21 10:08:41,922 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2019-09-21 10:08:42,140 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 202 [2019-09-21 10:08:42,638 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 194 [2019-09-21 10:08:42,825 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 202 [2019-09-21 10:08:42,944 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-09-21 10:08:43,131 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 204 [2019-09-21 10:08:43,589 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 187 [2019-09-21 10:08:43,733 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-09-21 10:08:43,925 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 189 [2019-09-21 10:08:44,238 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 212 [2019-09-21 10:08:44,536 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2019-09-21 10:08:44,809 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 211 [2019-09-21 10:08:44,933 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2019-09-21 10:08:45,245 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 204 [2019-09-21 10:08:45,349 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2019-09-21 10:08:45,540 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 205 [2019-09-21 10:08:45,771 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 218 [2019-09-21 10:08:45,903 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-09-21 10:08:46,130 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-09-21 10:08:46,299 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 218 [2019-09-21 10:08:46,434 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-09-21 10:08:46,632 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2019-09-21 10:08:46,894 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 232 [2019-09-21 10:08:47,077 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 231 [2019-09-21 10:08:47,283 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 233 [2019-09-21 10:08:47,611 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 224 [2019-09-21 10:08:47,751 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 224 [2019-09-21 10:08:48,002 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 225 [2019-09-21 10:08:48,242 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 233 [2019-09-21 10:08:48,419 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 233 [2019-09-21 10:08:48,700 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 235 [2019-09-21 10:08:49,292 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 231 [2019-09-21 10:08:49,457 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 231 [2019-09-21 10:08:49,776 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 233 [2019-09-21 10:08:50,109 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 224 [2019-09-21 10:08:50,254 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2019-09-21 10:08:50,425 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 225 [2019-09-21 10:08:50,727 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 237 [2019-09-21 10:08:50,905 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 237 [2019-09-21 10:08:51,113 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 239 [2019-09-21 10:08:51,392 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 199 [2019-09-21 10:08:51,636 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 201 [2019-09-21 10:08:51,827 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 241 [2019-09-21 10:08:52,005 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-09-21 10:08:52,273 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 241 [2019-09-21 10:08:52,412 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 220 [2019-09-21 10:08:52,536 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2019-09-21 10:08:52,693 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 212 [2019-09-21 10:08:52,722 INFO L199 IcfgInterpreter]: Interpreting procedure do_read_c with input of size 111 for LOIs [2019-09-21 10:08:53,460 INFO L199 IcfgInterpreter]: Interpreting procedure error with input of size 82 for LOIs [2019-09-21 10:08:53,508 INFO L183 IcfgInterpreter]: Interpretation finished [2019-09-21 10:08:53,508 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-09-21 10:08:53,510 INFO L193 IcfgInterpreter]: Reachable states at location errorErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 1499#(and (<= ~p_dw_i~0 1) (<= 1 ~p_dw_i~0) (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))) (not (= ~c_num_read~0 ~p_num_write~0)) (= ~c_last_read~0 ~p_last_write~0) (and (and (<= ~p_dw_pc~0 1) (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0) (<= 0 ~p_dw_pc~0) (or (and (<= 0 ~a_t~0) (= 0 (+ ~c_num_read~0 (- 1))) (<= 1 ~c_num_read~0) (<= ~a_t~0 0) (<= ~c_num_read~0 1) (<= ~c_dr_pc~0 0) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0) (= ~a_t~0 0) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)) (and (= ~c_dr_pc~0 1) (<= 1 ~c_dr_pc~0) (= ~p_dw_i~0 1) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0)))) (= 0 ~p_dw_st~0))) (and (or (and (<= ~p_dw_pc~0 1) (or (and (or (= 0 ~p_dw_st~0) (not (= 1 ~p_dw_pc~0))) (not (= ~c_dr_pc~0 0)) (and (= ~c_dr_pc~0 1) (<= 1 ~c_dr_pc~0) (= ~p_dw_i~0 1) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0)) (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0) (<= 0 ~p_dw_pc~0)) (and (or (= 0 ~p_dw_st~0) (not (= 1 ~p_dw_pc~0))) (<= 0 ~a_t~0) (<= ~a_t~0 0) (<= 1 ~c_num_read~0) (<= ~c_num_read~0 1) (<= 0 ~p_dw_pc~0) (<= ~c_dr_pc~0 0) (or (and (= ~c_dr_pc~0 1) (<= 1 ~c_dr_pc~0) (= ~p_dw_i~0 1) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0)) (and (= 0 (+ ~c_num_read~0 (- 1))) (= ~a_t~0 0) (= ~p_dw_i~0 1) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0))) (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0) (= ~c_dr_pc~0 0)))) (and (<= ~p_dw_pc~0 1) (and (or (= 0 ~p_dw_st~0) (not (= 1 ~p_dw_pc~0))) (or (and (= ~c_dr_pc~0 1) (<= 1 ~c_dr_pc~0) (= ~p_dw_i~0 1) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0)) (and (= 0 (+ ~c_num_read~0 (- 1))) (= ~a_t~0 0) (= ~p_dw_i~0 1) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0))) (<= 0 ~a_t~0) (<= 1 ~c_num_read~0) (<= ~a_t~0 0) (<= ~c_num_read~0 1) (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0) (= ~c_dr_pc~0 0) (<= 0 ~p_dw_pc~0)) (<= ~c_dr_pc~0 0))) (= ~q_read_ev~0 2) (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)))) (<= 2 ~q_read_ev~0) (<= 0 ~p_dw_st~0) (<= 0 ~c_dr_pc~0) (<= 1 ~q_free~0) (<= 1 ~c_dr_i~0) (<= ~c_dr_i~0 1) (<= ~p_dw_st~0 0) (<= 1 ~p_dw_pc~0) (<= ~q_free~0 1) (<= ~c_dr_pc~0 1) (<= ~q_read_ev~0 2)) [2019-09-21 10:08:53,525 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-09-21 10:08:53,525 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-09-21 10:08:53,527 INFO L168 Benchmark]: Toolchain (without parser) took 19790.07 ms. Allocated memory was 131.1 MB in the beginning and 809.5 MB in the end (delta: 678.4 MB). Free memory was 85.4 MB in the beginning and 192.1 MB in the end (delta: -106.7 MB). Peak memory consumption was 571.7 MB. Max. memory is 7.1 GB. [2019-09-21 10:08:53,528 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 131.1 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-21 10:08:53,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.82 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 85.2 MB in the beginning and 175.4 MB in the end (delta: -90.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2019-09-21 10:08:53,530 INFO L168 Benchmark]: Boogie Preprocessor took 38.62 ms. Allocated memory is still 199.2 MB. Free memory was 175.4 MB in the beginning and 173.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-09-21 10:08:53,531 INFO L168 Benchmark]: RCFGBuilder took 626.37 ms. Allocated memory is still 199.2 MB. Free memory was 173.4 MB in the beginning and 136.0 MB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2019-09-21 10:08:53,532 INFO L168 Benchmark]: Sifa took 18678.59 ms. Allocated memory was 199.2 MB in the beginning and 809.5 MB in the end (delta: 610.3 MB). Free memory was 136.0 MB in the beginning and 192.1 MB in the end (delta: -56.1 MB). Peak memory consumption was 554.2 MB. Max. memory is 7.1 GB. [2019-09-21 10:08:53,546 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 131.1 MB. Free memory was 105.3 MB in the beginning and 105.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 442.82 ms. Allocated memory was 131.1 MB in the beginning and 199.2 MB in the end (delta: 68.2 MB). Free memory was 85.2 MB in the beginning and 175.4 MB in the end (delta: -90.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.62 ms. Allocated memory is still 199.2 MB. Free memory was 175.4 MB in the beginning and 173.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 626.37 ms. Allocated memory is still 199.2 MB. Free memory was 173.4 MB in the beginning and 136.0 MB in the end (delta: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. * Sifa took 18678.59 ms. Allocated memory was 199.2 MB in the beginning and 809.5 MB in the end (delta: 610.3 MB). Free memory was 136.0 MB in the beginning and 192.1 MB in the end (delta: -56.1 MB). Peak memory consumption was 554.2 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]: 18638, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 761, DAG_INTERPRETER_EARLY_EXITS: 31, TOOLS_POST_APPLICATIONS: 555, TOOLS_POST_TIME[ms]: 580, TOOLS_POST_CALL_APPLICATIONS: 130, TOOLS_POST_CALL_TIME[ms]: 874, TOOLS_POST_RETURN_APPLICATIONS: 124, TOOLS_POST_RETURN_TIME[ms]: 336, TOOLS_QUANTIFIERELIM_APPLICATIONS: 786, TOOLS_QUANTIFIERELIM_TIME[ms]: 1504, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 29, FLUID_QUERY_TIME[ms]: 25, FLUID_QUERIES: 830, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 164, DOMAIN_JOIN_TIME[ms]: 14047, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME[ms]: 2109, DOMAIN_ISSUBSETEQ_APPLICATIONS: 69, DOMAIN_ISSUBSETEQ_TIME[ms]: 100, DOMAIN_ISBOTTOM_APPLICATIONS: 127, DOMAIN_ISBOTTOM_TIME[ms]: 361, LOOP_SUMMARIZER_APPLICATIONS: 64, LOOP_SUMMARIZER_CACHE_MISSES: 64, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 16520, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 16519, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 69, CALL_SUMMARIZER_APPLICATIONS: 124, CALL_SUMMARIZER_CACHE_MISSES: 14, CALL_SUMMARIZER_OVERALL_TIME[ms]: 3403, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 3400, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 6, PATH_EXPR_TIME[ms]: 7, REGEX_TO_DAG_TIME[ms]: 7, DAG_COMPRESSION_TIME[ms]: 57, 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 1499#(and (<= ~p_dw_i~0 1) (<= 1 ~p_dw_i~0) (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))) (not (= ~c_num_read~0 ~p_num_write~0)) (= ~c_last_read~0 ~p_last_write~0) (and (and (<= ~p_dw_pc~0 1) (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0) (<= 0 ~p_dw_pc~0) (or (and (<= 0 ~a_t~0) (= 0 (+ ~c_num_read~0 (- 1))) (<= 1 ~c_num_read~0) (<= ~a_t~0 0) (<= ~c_num_read~0 1) (<= ~c_dr_pc~0 0) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0) (= ~a_t~0 0) (= ~c_dr_pc~0 0) (= ~p_dw_i~0 1)) (and (= ~c_dr_pc~0 1) (<= 1 ~c_dr_pc~0) (= ~p_dw_i~0 1) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0)))) (= 0 ~p_dw_st~0))) (and (or (and (<= ~p_dw_pc~0 1) (or (and (or (= 0 ~p_dw_st~0) (not (= 1 ~p_dw_pc~0))) (not (= ~c_dr_pc~0 0)) (and (= ~c_dr_pc~0 1) (<= 1 ~c_dr_pc~0) (= ~p_dw_i~0 1) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0)) (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0) (<= 0 ~p_dw_pc~0)) (and (or (= 0 ~p_dw_st~0) (not (= 1 ~p_dw_pc~0))) (<= 0 ~a_t~0) (<= ~a_t~0 0) (<= 1 ~c_num_read~0) (<= ~c_num_read~0 1) (<= 0 ~p_dw_pc~0) (<= ~c_dr_pc~0 0) (or (and (= ~c_dr_pc~0 1) (<= 1 ~c_dr_pc~0) (= ~p_dw_i~0 1) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0)) (and (= 0 (+ ~c_num_read~0 (- 1))) (= ~a_t~0 0) (= ~p_dw_i~0 1) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0))) (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0) (= ~c_dr_pc~0 0)))) (and (<= ~p_dw_pc~0 1) (and (or (= 0 ~p_dw_st~0) (not (= 1 ~p_dw_pc~0))) (or (and (= ~c_dr_pc~0 1) (<= 1 ~c_dr_pc~0) (= ~p_dw_i~0 1) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0)) (and (= 0 (+ ~c_num_read~0 (- 1))) (= ~a_t~0 0) (= ~p_dw_i~0 1) (= 1 ~c_dr_i~0) (= 1 ~p_dw_pc~0))) (<= 0 ~a_t~0) (<= 1 ~c_num_read~0) (<= ~a_t~0 0) (<= ~c_num_read~0 1) (= 1 ~q_free~0) (= ~c_last_read~0 ~q_buf_0~0) (= ~c_dr_pc~0 0) (<= 0 ~p_dw_pc~0)) (<= ~c_dr_pc~0 0))) (= ~q_read_ev~0 2) (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)))) (<= 2 ~q_read_ev~0) (<= 0 ~p_dw_st~0) (<= 0 ~c_dr_pc~0) (<= 1 ~q_free~0) (<= 1 ~c_dr_i~0) (<= ~c_dr_i~0 1) (<= ~p_dw_st~0 0) (<= 1 ~p_dw_pc~0) (<= ~q_free~0 1) (<= ~c_dr_pc~0 1) (<= ~q_read_ev~0 2)). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...