./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_loop_dep.i --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_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/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_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_loop_dep.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/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_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/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 5cebeb76ad4442dbfc7818683322baaa88203ae05c49411b79170e1662f915e0 --- 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 10:38:32,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:38:32,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:38:32,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:38:32,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:38:32,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:38:32,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:38:32,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:38:32,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:38:32,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:38:32,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:38:32,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:38:32,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:38:32,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:38:32,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:38:32,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:38:32,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:38:32,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:38:32,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:38:32,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:38:32,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:38:32,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:38:32,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:38:32,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:38:32,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:38:32,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:38:32,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:38:32,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:38:32,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:38:32,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:38:32,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:38:32,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:38:32,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:38:32,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:38:32,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:38:32,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:38:32,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:38:32,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:38:32,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:38:32,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:38:32,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:38:32,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:38:32,249 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:38:32,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:38:32,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:38:32,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:38:32,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:38:32,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:38:32,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:38:32,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:38:32,254 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:38:32,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:38:32,255 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:38:32,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:38:32,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:38:32,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:38:32,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:38:32,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:38:32,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:38:32,258 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:38:32,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:38:32,258 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:38:32,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:38:32,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:38:32,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:38:32,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:38:32,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:38:32,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:38:32,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:38:32,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:38:32,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:38:32,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:38:32,262 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:38:32,262 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:38:32,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:38:32,263 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_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cebeb76ad4442dbfc7818683322baaa88203ae05c49411b79170e1662f915e0 [2022-10-17 10:38:32,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:38:32,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:38:32,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:38:32,665 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:38:32,666 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:38:32,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/array-industry-pattern/array_of_struct_loop_dep.i [2022-10-17 10:38:32,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/data/9eb0da4ca/f497cfdf3cbe4b24a546b4922d333b13/FLAG0145fd2e3 [2022-10-17 10:38:33,203 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:38:33,204 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/sv-benchmarks/c/array-industry-pattern/array_of_struct_loop_dep.i [2022-10-17 10:38:33,212 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/data/9eb0da4ca/f497cfdf3cbe4b24a546b4922d333b13/FLAG0145fd2e3 [2022-10-17 10:38:33,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/data/9eb0da4ca/f497cfdf3cbe4b24a546b4922d333b13 [2022-10-17 10:38:33,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:38:33,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:38:33,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:38:33,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:38:33,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:38:33,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:38:33" (1/1) ... [2022-10-17 10:38:33,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67525bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:33, skipping insertion in model container [2022-10-17 10:38:33,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:38:33" (1/1) ... [2022-10-17 10:38:33,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:38:33,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:38:33,844 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_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/sv-benchmarks/c/array-industry-pattern/array_of_struct_loop_dep.i[817,830] [2022-10-17 10:38:33,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:35,973 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:38:35,986 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_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/sv-benchmarks/c/array-industry-pattern/array_of_struct_loop_dep.i[817,830] [2022-10-17 10:38:35,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:38:36,008 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:38:36,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36 WrapperNode [2022-10-17 10:38:36,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:38:36,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:38:36,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:38:36,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:38:36,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36" (1/1) ... [2022-10-17 10:38:36,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36" (1/1) ... [2022-10-17 10:38:36,046 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2022-10-17 10:38:36,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:38:36,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:38:36,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:38:36,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:38:36,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36" (1/1) ... [2022-10-17 10:38:36,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36" (1/1) ... [2022-10-17 10:38:36,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36" (1/1) ... [2022-10-17 10:38:36,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36" (1/1) ... [2022-10-17 10:38:36,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36" (1/1) ... [2022-10-17 10:38:36,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36" (1/1) ... [2022-10-17 10:38:36,071 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36" (1/1) ... [2022-10-17 10:38:36,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36" (1/1) ... [2022-10-17 10:38:36,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:38:36,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:38:36,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:38:36,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:38:36,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36" (1/1) ... [2022-10-17 10:38:36,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:38:36,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:36,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:38:36,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:38:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:38:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:38:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:38:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:38:36,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:38:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:38:36,329 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:38:36,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:38:36,513 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:38:36,523 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:38:36,525 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:38:36,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:36 BoogieIcfgContainer [2022-10-17 10:38:36,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:38:36,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:38:36,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:38:36,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:38:36,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:38:33" (1/3) ... [2022-10-17 10:38:36,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae46dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:38:36, skipping insertion in model container [2022-10-17 10:38:36,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:38:36" (2/3) ... [2022-10-17 10:38:36,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae46dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:38:36, skipping insertion in model container [2022-10-17 10:38:36,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:38:36" (3/3) ... [2022-10-17 10:38:36,551 INFO L112 eAbstractionObserver]: Analyzing ICFG array_of_struct_loop_dep.i [2022-10-17 10:38:36,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:38:36,571 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:38:36,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:38:36,632 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;@3f2237c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:38:36,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:38:36,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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 10:38:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:38:36,645 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:36,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:36,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1807957391, now seen corresponding path program 1 times [2022-10-17 10:38:36,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:36,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676235187] [2022-10-17 10:38:36,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:36,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:36,879 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 10:38:36,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:36,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676235187] [2022-10-17 10:38:36,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676235187] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:38:36,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:38:36,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:38:36,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347047512] [2022-10-17 10:38:36,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:38:36,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:38:36,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:36,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:38:36,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:38:36,943 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 10:38:37,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:37,045 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2022-10-17 10:38:37,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:38:37,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-10-17 10:38:37,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:37,065 INFO L225 Difference]: With dead ends: 37 [2022-10-17 10:38:37,065 INFO L226 Difference]: Without dead ends: 21 [2022-10-17 10:38:37,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 10:38:37,073 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:37,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:38:37,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-10-17 10:38:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2022-10-17 10:38:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 10:38:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-10-17 10:38:37,128 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 7 [2022-10-17 10:38:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:37,129 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-10-17 10:38:37,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 10:38:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-10-17 10:38:37,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 10:38:37,130 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:37,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:37,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:38:37,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:37,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash -369319347, now seen corresponding path program 1 times [2022-10-17 10:38:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:37,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566839587] [2022-10-17 10:38:37,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:37,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:37,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:37,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566839587] [2022-10-17 10:38:37,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566839587] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:38:37,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467064555] [2022-10-17 10:38:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:37,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:38:37,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:37,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:38:37,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:38:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:37,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:38:37,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:37,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:38:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:37,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467064555] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:38:37,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:38:37,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-17 10:38:37,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986205968] [2022-10-17 10:38:37,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:38:37,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:38:37,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:37,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:38:37,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:38:37,421 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 10:38:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:37,487 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2022-10-17 10:38:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:38:37,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 9 [2022-10-17 10:38:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:37,489 INFO L225 Difference]: With dead ends: 53 [2022-10-17 10:38:37,490 INFO L226 Difference]: Without dead ends: 41 [2022-10-17 10:38:37,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:38:37,492 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 41 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:37,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 23 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:38:37,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-17 10:38:37,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2022-10-17 10:38:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 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 10:38:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-10-17 10:38:37,502 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2022-10-17 10:38:37,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:37,502 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-10-17 10:38:37,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 10:38:37,503 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-10-17 10:38:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 10:38:37,504 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:37,504 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:37,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:37,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:38:37,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:37,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:37,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1716192135, now seen corresponding path program 2 times [2022-10-17 10:38:37,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:37,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077270221] [2022-10-17 10:38:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:37,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:37,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:37,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077270221] [2022-10-17 10:38:37,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077270221] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:38:37,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874455374] [2022-10-17 10:38:37,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:38:37,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:38:37,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:37,881 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:38:37,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:38:37,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:38:37,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:38:37,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:38:37,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:38,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:38:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:38,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874455374] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:38:38,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:38:38,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-10-17 10:38:38,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833033622] [2022-10-17 10:38:38,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:38:38,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 10:38:38,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:38,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 10:38:38,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:38:38,144 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 10:38:38,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:38,346 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2022-10-17 10:38:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:38:38,347 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 15 [2022-10-17 10:38:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:38,355 INFO L225 Difference]: With dead ends: 112 [2022-10-17 10:38:38,355 INFO L226 Difference]: Without dead ends: 95 [2022-10-17 10:38:38,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:38:38,360 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 156 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:38,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 50 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:38:38,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-17 10:38:38,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 55. [2022-10-17 10:38:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 54 states have internal predecessors, (62), 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 10:38:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2022-10-17 10:38:38,387 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 15 [2022-10-17 10:38:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:38,387 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2022-10-17 10:38:38,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 10:38:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2022-10-17 10:38:38,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 10:38:38,389 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:38,389 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:38,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:38,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-17 10:38:38,611 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:38,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:38,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1328180091, now seen corresponding path program 3 times [2022-10-17 10:38:38,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:38,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380273668] [2022-10-17 10:38:38,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:38,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:38,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:38,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380273668] [2022-10-17 10:38:38,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380273668] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:38:38,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338880344] [2022-10-17 10:38:38,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:38:38,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:38:38,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:38,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:38:39,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:38:39,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-10-17 10:38:39,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:38:39,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 10:38:39,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:39,165 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:39,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:38:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:39,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338880344] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:38:39,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:38:39,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-10-17 10:38:39,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394126183] [2022-10-17 10:38:39,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:38:39,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-17 10:38:39,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:39,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-17 10:38:39,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-10-17 10:38:39,408 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 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 10:38:39,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:39,752 INFO L93 Difference]: Finished difference Result 235 states and 271 transitions. [2022-10-17 10:38:39,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 10:38:39,753 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 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 27 [2022-10-17 10:38:39,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:39,755 INFO L225 Difference]: With dead ends: 235 [2022-10-17 10:38:39,755 INFO L226 Difference]: Without dead ends: 203 [2022-10-17 10:38:39,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-10-17 10:38:39,757 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 347 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:39,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 98 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:38:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-10-17 10:38:39,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 109. [2022-10-17 10:38:39,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.1296296296296295) internal successors, (122), 108 states have internal predecessors, (122), 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 10:38:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2022-10-17 10:38:39,772 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 27 [2022-10-17 10:38:39,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:39,772 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2022-10-17 10:38:39,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 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 10:38:39,773 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2022-10-17 10:38:39,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-17 10:38:39,774 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:39,775 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:39,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:39,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:38:39,994 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:39,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1458393443, now seen corresponding path program 4 times [2022-10-17 10:38:39,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:39,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207222599] [2022-10-17 10:38:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:40,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:40,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207222599] [2022-10-17 10:38:40,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207222599] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:38:40,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908280199] [2022-10-17 10:38:40,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 10:38:40,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:38:40,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:40,803 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:38:40,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:38:40,942 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 10:38:40,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:38:40,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjunts are in the unsatisfiable core [2022-10-17 10:38:40,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:38:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:41,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:38:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:42,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908280199] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:38:42,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:38:42,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-10-17 10:38:42,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066738946] [2022-10-17 10:38:42,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:38:42,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-10-17 10:38:42,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:38:42,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-10-17 10:38:42,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-10-17 10:38:42,042 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 49 states have internal predecessors, (100), 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 10:38:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:38:42,885 INFO L93 Difference]: Finished difference Result 481 states and 553 transitions. [2022-10-17 10:38:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-10-17 10:38:42,886 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 49 states have internal predecessors, (100), 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 51 [2022-10-17 10:38:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:38:42,890 INFO L225 Difference]: With dead ends: 481 [2022-10-17 10:38:42,890 INFO L226 Difference]: Without dead ends: 419 [2022-10-17 10:38:42,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-10-17 10:38:42,894 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 897 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:38:42,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 199 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:38:42,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-10-17 10:38:42,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 217. [2022-10-17 10:38:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.1203703703703705) internal successors, (242), 216 states have internal predecessors, (242), 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 10:38:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 242 transitions. [2022-10-17 10:38:42,941 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 242 transitions. Word has length 51 [2022-10-17 10:38:42,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:38:42,941 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 242 transitions. [2022-10-17 10:38:42,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 49 states have internal predecessors, (100), 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 10:38:42,941 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 242 transitions. [2022-10-17 10:38:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-17 10:38:42,945 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:38:42,945 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:38:42,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:38:43,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:38:43,151 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:38:43,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:38:43,152 INFO L85 PathProgramCache]: Analyzing trace with hash 546272563, now seen corresponding path program 5 times [2022-10-17 10:38:43,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:38:43,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712980263] [2022-10-17 10:38:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:38:43,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:38:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:38:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:38:45,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:38:45,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712980263] [2022-10-17 10:38:45,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712980263] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:38:45,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922899658] [2022-10-17 10:38:45,420 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-17 10:38:45,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:38:45,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:38:45,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:38:45,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1d4223c-d1fd-4856-8a4e-bdfc90a7f2e9/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:39:08,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-10-17 10:39:08,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:39:09,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 48 conjunts are in the unsatisfiable core [2022-10-17 10:39:09,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:39:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:39:09,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:39:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:39:12,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922899658] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:39:12,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:39:12,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-10-17 10:39:12,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275916653] [2022-10-17 10:39:12,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:39:12,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-10-17 10:39:12,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:39:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-10-17 10:39:12,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-10-17 10:39:12,130 INFO L87 Difference]: Start difference. First operand 217 states and 242 transitions. Second operand has 97 states, 97 states have (on average 2.020618556701031) internal successors, (196), 97 states have internal predecessors, (196), 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)