./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label41.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label41.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ --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 fdbc0fdc55527506c6212fedb75f15bc177498c1e0d7baa5a0c1614f273a6557 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:48:46,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:48:46,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:48:46,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:48:46,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:48:46,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:48:46,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:48:46,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:48:46,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:48:46,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:48:46,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:48:46,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:48:46,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:48:46,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:48:46,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:48:46,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:48:46,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:48:46,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:48:46,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:48:46,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:48:46,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:48:46,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:48:46,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:48:46,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:48:46,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:48:46,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:48:46,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:48:46,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:48:46,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:48:46,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:48:46,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:48:46,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:48:46,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:48:46,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:48:46,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:48:46,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:48:46,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:48:46,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:48:46,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:48:46,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:48:46,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:48:46,206 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:48:46,256 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:48:46,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:48:46,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:48:46,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:48:46,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:48:46,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:48:46,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:48:46,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:48:46,261 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:48:46,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:48:46,263 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:48:46,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:48:46,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:48:46,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:48:46,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:48:46,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:48:46,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:48:46,265 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:48:46,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:48:46,266 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:48:46,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:48:46,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:48:46,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:48:46,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:48:46,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:48:46,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:48:46,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:48:46,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:48:46,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:48:46,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:48:46,270 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:48:46,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:48:46,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:48:46,271 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdbc0fdc55527506c6212fedb75f15bc177498c1e0d7baa5a0c1614f273a6557 [2022-10-17 10:48:46,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:48:46,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:48:46,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:48:46,546 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:48:46,546 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:48:46,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem12_label41.c [2022-10-17 10:48:46,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/data/ebd6e3312/5ed8b77f12f64e88b27613121b3f8971/FLAG7e1a8d2ef [2022-10-17 10:48:47,387 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:48:47,389 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/sv-benchmarks/c/eca-rers2012/Problem12_label41.c [2022-10-17 10:48:47,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/data/ebd6e3312/5ed8b77f12f64e88b27613121b3f8971/FLAG7e1a8d2ef [2022-10-17 10:48:47,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/data/ebd6e3312/5ed8b77f12f64e88b27613121b3f8971 [2022-10-17 10:48:47,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:48:47,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:48:47,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:48:47,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:48:47,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:48:47,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:48:47" (1/1) ... [2022-10-17 10:48:47,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@241dd318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:47, skipping insertion in model container [2022-10-17 10:48:47,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:48:47" (1/1) ... [2022-10-17 10:48:47,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:48:47,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:48:47,998 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/sv-benchmarks/c/eca-rers2012/Problem12_label41.c[6479,6492] [2022-10-17 10:48:49,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:48:49,175 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:48:49,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/sv-benchmarks/c/eca-rers2012/Problem12_label41.c[6479,6492] [2022-10-17 10:48:50,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:48:50,087 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:48:50,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50 WrapperNode [2022-10-17 10:48:50,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:48:50,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:48:50,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:48:50,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:48:50,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50" (1/1) ... [2022-10-17 10:48:50,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50" (1/1) ... [2022-10-17 10:48:50,583 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-10-17 10:48:50,584 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:48:50,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:48:50,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:48:50,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:48:50,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50" (1/1) ... [2022-10-17 10:48:50,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50" (1/1) ... [2022-10-17 10:48:50,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50" (1/1) ... [2022-10-17 10:48:50,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50" (1/1) ... [2022-10-17 10:48:50,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50" (1/1) ... [2022-10-17 10:48:50,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50" (1/1) ... [2022-10-17 10:48:50,990 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50" (1/1) ... [2022-10-17 10:48:51,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50" (1/1) ... [2022-10-17 10:48:51,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:48:51,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:48:51,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:48:51,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:48:51,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50" (1/1) ... [2022-10-17 10:48:51,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:48:51,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:51,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:48:51,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8204770c-015c-4f5d-bb19-ed3cea615206/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:48:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:48:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:48:51,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:48:51,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:48:51,524 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:48:51,539 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:48:56,436 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:48:56,464 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:48:56,464 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:48:56,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:48:56 BoogieIcfgContainer [2022-10-17 10:48:56,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:48:56,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:48:56,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:48:56,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:48:56,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:48:47" (1/3) ... [2022-10-17 10:48:56,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cc3042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:48:56, skipping insertion in model container [2022-10-17 10:48:56,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:48:50" (2/3) ... [2022-10-17 10:48:56,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69cc3042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:48:56, skipping insertion in model container [2022-10-17 10:48:56,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:48:56" (3/3) ... [2022-10-17 10:48:56,479 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label41.c [2022-10-17 10:48:56,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:48:56,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:48:56,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:48:56,614 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1f3f0488, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:48:56,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:48:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:48:56,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 10:48:56,638 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:56,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:48:56,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:48:56,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:56,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1382487458, now seen corresponding path program 1 times [2022-10-17 10:48:56,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:56,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147460949] [2022-10-17 10:48:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:56,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:48:57,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:57,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147460949] [2022-10-17 10:48:57,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147460949] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:57,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:57,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:48:57,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379477643] [2022-10-17 10:48:57,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:57,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:48:57,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:48:57,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:48:57,173 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:01,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:49:01,297 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-10-17 10:49:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:49:01,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-10-17 10:49:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:49:01,323 INFO L225 Difference]: With dead ends: 2388 [2022-10-17 10:49:01,323 INFO L226 Difference]: Without dead ends: 1506 [2022-10-17 10:49:01,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:49:01,334 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 782 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:49:01,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-10-17 10:49:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-10-17 10:49:01,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-10-17 10:49:01,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:01,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2022-10-17 10:49:01,466 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 52 [2022-10-17 10:49:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:49:01,466 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2022-10-17 10:49:01,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2022-10-17 10:49:01,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 10:49:01,472 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:49:01,473 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:49:01,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:49:01,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:49:01,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:01,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1969596239, now seen corresponding path program 1 times [2022-10-17 10:49:01,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:01,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707598545] [2022-10-17 10:49:01,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:01,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:01,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:01,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707598545] [2022-10-17 10:49:01,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707598545] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:01,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:01,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:49:01,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435811129] [2022-10-17 10:49:01,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:01,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:49:01,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:01,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:49:01,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:49:01,926 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:07,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:49:07,104 INFO L93 Difference]: Finished difference Result 4549 states and 7430 transitions. [2022-10-17 10:49:07,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:49:07,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-10-17 10:49:07,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:49:07,125 INFO L225 Difference]: With dead ends: 4549 [2022-10-17 10:49:07,125 INFO L226 Difference]: Without dead ends: 3008 [2022-10-17 10:49:07,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:49:07,129 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3732 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:49:07,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 656 Invalid, 4396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3732 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-10-17 10:49:07,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-10-17 10:49:07,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-10-17 10:49:07,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.341536415031593) internal successors, (4034), 3007 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4034 transitions. [2022-10-17 10:49:07,212 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4034 transitions. Word has length 123 [2022-10-17 10:49:07,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:49:07,213 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4034 transitions. [2022-10-17 10:49:07,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:07,214 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4034 transitions. [2022-10-17 10:49:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-10-17 10:49:07,220 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:49:07,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:49:07,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:49:07,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:49:07,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:07,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1310463314, now seen corresponding path program 1 times [2022-10-17 10:49:07,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:07,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350101343] [2022-10-17 10:49:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:07,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:49:07,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:07,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350101343] [2022-10-17 10:49:07,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350101343] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:07,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:07,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:49:07,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605749049] [2022-10-17 10:49:07,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:07,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:49:07,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:07,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:49:07,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:49:07,737 INFO L87 Difference]: Start difference. First operand 3008 states and 4034 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:12,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:49:12,829 INFO L93 Difference]: Finished difference Result 9769 states and 12892 transitions. [2022-10-17 10:49:12,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:49:12,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-10-17 10:49:12,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:49:12,876 INFO L225 Difference]: With dead ends: 9769 [2022-10-17 10:49:12,876 INFO L226 Difference]: Without dead ends: 6763 [2022-10-17 10:49:12,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:49:12,883 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2093 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4273 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 4840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:49:12,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 452 Invalid, 4840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 4273 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-10-17 10:49:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-10-17 10:49:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6763. [2022-10-17 10:49:13,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.287341023365868) internal successors, (8705), 6762 states have internal predecessors, (8705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 8705 transitions. [2022-10-17 10:49:13,054 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 8705 transitions. Word has length 161 [2022-10-17 10:49:13,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:49:13,055 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 8705 transitions. [2022-10-17 10:49:13,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:49:13,056 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 8705 transitions. [2022-10-17 10:49:13,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-10-17 10:49:13,066 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:49:13,067 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:49:13,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:49:13,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:49:13,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:49:13,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1590426961, now seen corresponding path program 1 times [2022-10-17 10:49:13,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:49:13,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617565917] [2022-10-17 10:49:13,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:49:13,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:49:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:49:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-10-17 10:49:13,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:49:13,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617565917] [2022-10-17 10:49:13,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617565917] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:49:13,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:49:13,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:49:13,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966661625] [2022-10-17 10:49:13,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:49:13,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:49:13,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:49:13,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:49:13,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:49:13,807 INFO L87 Difference]: Start difference. First operand 6763 states and 8705 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)