./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2018/Problem11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2018/Problem11.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 940624650400628fbc547d76c7cce642a9063fb1576962b71733623b165f113e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:33:17,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:33:17,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:33:17,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:33:17,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:33:17,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:33:17,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:33:17,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:33:17,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:33:17,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:33:17,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:33:17,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:33:17,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:33:17,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:33:17,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:33:17,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:33:17,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:33:17,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:33:17,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:33:17,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:33:17,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:33:17,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:33:17,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:33:17,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:33:17,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:33:17,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:33:17,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:33:17,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:33:17,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:33:17,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:33:17,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:33:17,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:33:17,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:33:17,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:33:17,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:33:17,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:33:17,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:33:17,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:33:17,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:33:17,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:33:17,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:33:17,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 11:33:17,810 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:33:17,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:33:17,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:33:17,810 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:33:17,811 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:33:17,811 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:33:17,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:33:17,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:33:17,812 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:33:17,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:33:17,812 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:33:17,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 11:33:17,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:33:17,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:33:17,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:33:17,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:33:17,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:33:17,813 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:33:17,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:33:17,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:33:17,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:33:17,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:33:17,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:33:17,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:33:17,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:33:17,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:33:17,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:33:17,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:33:17,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 11:33:17,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 11:33:17,815 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:33:17,816 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:33:17,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:33:17,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:33:17,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 940624650400628fbc547d76c7cce642a9063fb1576962b71733623b165f113e [2021-12-21 11:33:18,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:33:18,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:33:18,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:33:18,048 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:33:18,048 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:33:18,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2018/Problem11.c [2021-12-21 11:33:18,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1ec2dd43/5cae80aeb6794860b261a7f4e51fd012/FLAG63fc69c6f [2021-12-21 11:33:18,611 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:33:18,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2018/Problem11.c [2021-12-21 11:33:18,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1ec2dd43/5cae80aeb6794860b261a7f4e51fd012/FLAG63fc69c6f [2021-12-21 11:33:19,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1ec2dd43/5cae80aeb6794860b261a7f4e51fd012 [2021-12-21 11:33:19,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:33:19,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:33:19,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:33:19,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:33:19,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:33:19,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:33:19" (1/1) ... [2021-12-21 11:33:19,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392ca32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19, skipping insertion in model container [2021-12-21 11:33:19,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:33:19" (1/1) ... [2021-12-21 11:33:19,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:33:19,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:33:19,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2018/Problem11.c[778,791] [2021-12-21 11:33:19,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2018/Problem11.c[817,830] [2021-12-21 11:33:19,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:33:19,729 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:33:19,738 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2018/Problem11.c[778,791] [2021-12-21 11:33:19,738 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2018/Problem11.c[817,830] [2021-12-21 11:33:19,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:33:19,907 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:33:19,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19 WrapperNode [2021-12-21 11:33:19,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:33:19,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:33:19,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:33:19,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:33:19,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19" (1/1) ... [2021-12-21 11:33:19,952 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19" (1/1) ... [2021-12-21 11:33:20,141 INFO L137 Inliner]: procedures = 286, calls = 252, calls flagged for inlining = 148, calls inlined = 148, statements flattened = 2260 [2021-12-21 11:33:20,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:33:20,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:33:20,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:33:20,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:33:20,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19" (1/1) ... [2021-12-21 11:33:20,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19" (1/1) ... [2021-12-21 11:33:20,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19" (1/1) ... [2021-12-21 11:33:20,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19" (1/1) ... [2021-12-21 11:33:20,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19" (1/1) ... [2021-12-21 11:33:20,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19" (1/1) ... [2021-12-21 11:33:20,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19" (1/1) ... [2021-12-21 11:33:20,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:33:20,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:33:20,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:33:20,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:33:20,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19" (1/1) ... [2021-12-21 11:33:20,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:33:20,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:33:20,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 11:33:20,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 11:33:20,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:33:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_a [2021-12-21 11:33:20,568 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_a [2021-12-21 11:33:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error_b [2021-12-21 11:33:20,571 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error_b [2021-12-21 11:33:20,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 11:33:20,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:33:20,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:33:20,711 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:33:20,713 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:34:09,695 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:34:09,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:34:09,704 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 11:34:09,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:34:09 BoogieIcfgContainer [2021-12-21 11:34:09,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:34:09,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:34:09,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:34:09,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:34:09,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:33:19" (1/3) ... [2021-12-21 11:34:09,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c14d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:34:09, skipping insertion in model container [2021-12-21 11:34:09,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:33:19" (2/3) ... [2021-12-21 11:34:09,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c14d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:34:09, skipping insertion in model container [2021-12-21 11:34:09,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:34:09" (3/3) ... [2021-12-21 11:34:09,712 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11.c [2021-12-21 11:34:09,717 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:34:09,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 11:34:09,748 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:34:09,752 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 11:34:09,752 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 11:34:09,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 705 states, 600 states have (on average 1.5866666666666667) internal successors, (952), 602 states have internal predecessors, (952), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2021-12-21 11:34:09,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 11:34:09,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:34:09,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:34:09,779 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION === [reach_error_aErr0ASSERT_VIOLATIONERROR_FUNCTION, reach_error_bErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:34:09,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:34:09,785 INFO L85 PathProgramCache]: Analyzing trace with hash -295136918, now seen corresponding path program 1 times [2021-12-21 11:34:09,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:34:09,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977863686] [2021-12-21 11:34:09,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:34:09,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:34:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:34:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:34:10,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:34:10,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977863686] [2021-12-21 11:34:10,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977863686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:34:10,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:34:10,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:34:10,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009001851] [2021-12-21 11:34:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:34:10,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 11:34:10,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:34:10,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 11:34:10,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 11:34:10,138 INFO L87 Difference]: Start difference. First operand has 705 states, 600 states have (on average 1.5866666666666667) internal successors, (952), 602 states have internal predecessors, (952), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:34:12,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 11:34:15,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 11:34:16,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 11:34:19,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 11:34:21,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 11:34:24,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 11:34:26,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 11:34:32,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 11:34:35,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 11:34:37,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-21 11:34:38,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []