./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.12.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8 --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 bc6dc2c99e05b6915f0a2e5b5d96221c996d96767aaa6be997dea59c4d6f5f0a --- 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-e04fb08 [2022-11-16 11:13:09,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:13:09,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:13:09,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:13:09,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:13:09,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:13:09,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:13:09,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:13:09,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:13:09,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:13:09,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:13:09,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:13:09,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:13:09,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:13:09,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:13:09,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:13:09,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:13:09,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:13:09,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:13:09,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:13:09,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:13:09,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:13:09,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:13:09,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:13:09,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:13:09,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:13:09,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:13:09,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:13:09,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:13:09,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:13:09,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:13:09,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:13:09,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:13:09,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:13:09,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:13:09,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:13:09,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:13:09,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:13:09,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:13:09,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:13:09,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:13:09,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:13:09,266 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:13:09,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:13:09,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:13:09,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:13:09,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:13:09,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:13:09,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:13:09,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:13:09,272 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:13:09,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:13:09,274 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:13:09,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:13:09,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:13:09,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:13:09,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:13:09,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:13:09,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:13:09,275 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:13:09,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:13:09,276 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:13:09,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:13:09,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:13:09,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:13:09,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:13:09,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:13:09,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:13:09,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:13:09,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:13:09,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:13:09,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:13:09,280 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:13:09,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:13:09,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:13:09,280 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_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc6dc2c99e05b6915f0a2e5b5d96221c996d96767aaa6be997dea59c4d6f5f0a [2022-11-16 11:13:09,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:13:09,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:13:09,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:13:09,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:13:09,601 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:13:09,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/systemc/token_ring.12.cil-2.c [2022-11-16 11:13:09,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/data/de0273db8/fcc2db15cb814e36ad229403e6b84a88/FLAGdb9ceb7cb [2022-11-16 11:13:10,146 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:13:10,147 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/sv-benchmarks/c/systemc/token_ring.12.cil-2.c [2022-11-16 11:13:10,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/data/de0273db8/fcc2db15cb814e36ad229403e6b84a88/FLAGdb9ceb7cb [2022-11-16 11:13:10,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/data/de0273db8/fcc2db15cb814e36ad229403e6b84a88 [2022-11-16 11:13:10,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:13:10,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:13:10,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:13:10,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:13:10,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:13:10,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:13:10" (1/1) ... [2022-11-16 11:13:10,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3cf228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:10, skipping insertion in model container [2022-11-16 11:13:10,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:13:10" (1/1) ... [2022-11-16 11:13:10,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:13:10,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:13:10,756 WARN L229 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_330b5081-ff32-4b5d-8e1e-11a00d96534d/sv-benchmarks/c/systemc/token_ring.12.cil-2.c[671,684] [2022-11-16 11:13:10,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:13:10,910 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:13:10,924 WARN L229 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_330b5081-ff32-4b5d-8e1e-11a00d96534d/sv-benchmarks/c/systemc/token_ring.12.cil-2.c[671,684] [2022-11-16 11:13:10,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:13:11,014 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:13:11,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11 WrapperNode [2022-11-16 11:13:11,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:13:11,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:13:11,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:13:11,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:13:11,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11" (1/1) ... [2022-11-16 11:13:11,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11" (1/1) ... [2022-11-16 11:13:11,090 INFO L138 Inliner]: procedures = 52, calls = 67, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 853 [2022-11-16 11:13:11,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:13:11,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:13:11,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:13:11,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:13:11,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11" (1/1) ... [2022-11-16 11:13:11,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11" (1/1) ... [2022-11-16 11:13:11,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11" (1/1) ... [2022-11-16 11:13:11,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11" (1/1) ... [2022-11-16 11:13:11,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11" (1/1) ... [2022-11-16 11:13:11,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11" (1/1) ... [2022-11-16 11:13:11,143 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11" (1/1) ... [2022-11-16 11:13:11,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11" (1/1) ... [2022-11-16 11:13:11,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:13:11,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:13:11,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:13:11,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:13:11,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11" (1/1) ... [2022-11-16 11:13:11,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:13:11,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:11,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:13:11,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330b5081-ff32-4b5d-8e1e-11a00d96534d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:13:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:13:11,273 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-16 11:13:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-16 11:13:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-16 11:13:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-16 11:13:11,274 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-16 11:13:11,274 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-16 11:13:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-16 11:13:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-16 11:13:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-16 11:13:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-16 11:13:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-16 11:13:11,277 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-16 11:13:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:13:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:13:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:13:11,469 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:13:11,472 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:13:12,564 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:13:12,587 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:13:12,588 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-16 11:13:12,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:13:12 BoogieIcfgContainer [2022-11-16 11:13:12,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:13:12,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:13:12,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:13:12,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:13:12,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:13:10" (1/3) ... [2022-11-16 11:13:12,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c2aca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:13:12, skipping insertion in model container [2022-11-16 11:13:12,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:11" (2/3) ... [2022-11-16 11:13:12,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c2aca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:13:12, skipping insertion in model container [2022-11-16 11:13:12,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:13:12" (3/3) ... [2022-11-16 11:13:12,602 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.12.cil-2.c [2022-11-16 11:13:12,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:13:12,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:13:12,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:13:12,745 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;@74fbcba5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:13:12,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:13:12,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 348 states have (on average 1.6637931034482758) internal successors, (579), 350 states have internal predecessors, (579), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 11:13:12,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:13:12,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:12,781 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, 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, 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] [2022-11-16 11:13:12,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:12,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:12,788 INFO L85 PathProgramCache]: Analyzing trace with hash -527385359, now seen corresponding path program 1 times [2022-11-16 11:13:12,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:12,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774375433] [2022-11-16 11:13:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:12,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:13:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:13,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:13:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:13,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:13:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:13,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:13:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:13:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:13,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:13,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774375433] [2022-11-16 11:13:13,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774375433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:13,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:13,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:13,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437273260] [2022-11-16 11:13:13,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:13,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:13,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:13,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:13,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:13,663 INFO L87 Difference]: Start difference. First operand has 382 states, 348 states have (on average 1.6637931034482758) internal successors, (579), 350 states have internal predecessors, (579), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:16,344 INFO L93 Difference]: Finished difference Result 895 states and 1490 transitions. [2022-11-16 11:13:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:13:16,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-11-16 11:13:16,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:16,376 INFO L225 Difference]: With dead ends: 895 [2022-11-16 11:13:16,376 INFO L226 Difference]: Without dead ends: 519 [2022-11-16 11:13:16,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:13:16,393 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1034 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:16,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 744 Invalid, 1092 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 11:13:16,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-11-16 11:13:16,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 377. [2022-11-16 11:13:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 344 states have (on average 1.5755813953488371) internal successors, (542), 345 states have internal predecessors, (542), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 11:13:16,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 594 transitions. [2022-11-16 11:13:16,526 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 594 transitions. Word has length 177 [2022-11-16 11:13:16,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:16,527 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 594 transitions. [2022-11-16 11:13:16,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 594 transitions. [2022-11-16 11:13:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:13:16,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:16,532 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, 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, 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] [2022-11-16 11:13:16,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:13:16,533 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:16,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:16,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1036164173, now seen corresponding path program 1 times [2022-11-16 11:13:16,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:16,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694754063] [2022-11-16 11:13:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:16,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:13:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:16,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:13:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:16,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:13:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:16,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:13:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:16,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:13:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:16,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:16,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694754063] [2022-11-16 11:13:16,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694754063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:16,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:16,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:13:16,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271904536] [2022-11-16 11:13:16,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:16,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:13:16,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:16,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:13:16,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:13:16,761 INFO L87 Difference]: Start difference. First operand 377 states and 594 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:19,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:19,223 INFO L93 Difference]: Finished difference Result 878 states and 1402 transitions. [2022-11-16 11:13:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:13:19,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-11-16 11:13:19,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:19,228 INFO L225 Difference]: With dead ends: 878 [2022-11-16 11:13:19,228 INFO L226 Difference]: Without dead ends: 519 [2022-11-16 11:13:19,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:13:19,231 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1021 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:19,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 730 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 11:13:19,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-11-16 11:13:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 377. [2022-11-16 11:13:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 344 states have (on average 1.572674418604651) internal successors, (541), 345 states have internal predecessors, (541), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-16 11:13:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 593 transitions. [2022-11-16 11:13:19,325 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 593 transitions. Word has length 177 [2022-11-16 11:13:19,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:19,328 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 593 transitions. [2022-11-16 11:13:19,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:19,328 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 593 transitions. [2022-11-16 11:13:19,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:13:19,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:19,337 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, 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, 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] [2022-11-16 11:13:19,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:13:19,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:19,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:19,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1159064693, now seen corresponding path program 1 times [2022-11-16 11:13:19,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:19,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421696968] [2022-11-16 11:13:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:19,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:19,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:13:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:19,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:13:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:19,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:13:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:13:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:13:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:19,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:19,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421696968] [2022-11-16 11:13:19,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421696968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:19,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:19,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:13:19,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391373642] [2022-11-16 11:13:19,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:19,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:13:19,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:19,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:13:19,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:19,704 INFO L87 Difference]: Start difference. First operand 377 states and 593 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:24,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:24,172 INFO L93 Difference]: Finished difference Result 1393 states and 2240 transitions. [2022-11-16 11:13:24,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:13:24,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-11-16 11:13:24,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:24,181 INFO L225 Difference]: With dead ends: 1393 [2022-11-16 11:13:24,181 INFO L226 Difference]: Without dead ends: 1036 [2022-11-16 11:13:24,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:13:24,184 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1560 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:24,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 1289 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 11:13:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-11-16 11:13:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 753. [2022-11-16 11:13:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.5852601156069364) internal successors, (1097), 694 states have internal predecessors, (1097), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-11-16 11:13:24,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1194 transitions. [2022-11-16 11:13:24,321 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1194 transitions. Word has length 177 [2022-11-16 11:13:24,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:24,322 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1194 transitions. [2022-11-16 11:13:24,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:24,322 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1194 transitions. [2022-11-16 11:13:24,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:13:24,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:24,326 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, 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, 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] [2022-11-16 11:13:24,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:13:24,326 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:24,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:24,327 INFO L85 PathProgramCache]: Analyzing trace with hash 283079417, now seen corresponding path program 1 times [2022-11-16 11:13:24,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:24,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739028982] [2022-11-16 11:13:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:24,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:24,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:13:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:24,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:13:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:13:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:24,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:13:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:13:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:24,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:24,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739028982] [2022-11-16 11:13:24,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739028982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:24,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:24,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:24,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752769869] [2022-11-16 11:13:24,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:24,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:24,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:24,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:24,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:24,670 INFO L87 Difference]: Start difference. First operand 753 states and 1194 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:29,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:29,877 INFO L93 Difference]: Finished difference Result 2306 states and 3714 transitions. [2022-11-16 11:13:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:13:29,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-11-16 11:13:29,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:29,887 INFO L225 Difference]: With dead ends: 2306 [2022-11-16 11:13:29,887 INFO L226 Difference]: Without dead ends: 1573 [2022-11-16 11:13:29,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:13:29,892 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 1595 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 3645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:29,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 2419 Invalid, 3645 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-16 11:13:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2022-11-16 11:13:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1102. [2022-11-16 11:13:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1013 states have (on average 1.5784797630799605) internal successors, (1599), 1016 states have internal predecessors, (1599), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-11-16 11:13:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1740 transitions. [2022-11-16 11:13:30,076 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1740 transitions. Word has length 177 [2022-11-16 11:13:30,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:30,077 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1740 transitions. [2022-11-16 11:13:30,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1740 transitions. [2022-11-16 11:13:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:13:30,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:30,080 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, 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, 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] [2022-11-16 11:13:30,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:13:30,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:30,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash -328189641, now seen corresponding path program 1 times [2022-11-16 11:13:30,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:30,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586062306] [2022-11-16 11:13:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:30,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:30,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:13:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:30,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:13:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:30,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:13:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:13:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:13:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:30,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:30,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586062306] [2022-11-16 11:13:30,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586062306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:30,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:30,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:30,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298328200] [2022-11-16 11:13:30,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:30,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:30,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:30,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:30,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:30,402 INFO L87 Difference]: Start difference. First operand 1102 states and 1740 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:35,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:35,509 INFO L93 Difference]: Finished difference Result 3652 states and 5868 transitions. [2022-11-16 11:13:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:13:35,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-11-16 11:13:35,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:35,525 INFO L225 Difference]: With dead ends: 3652 [2022-11-16 11:13:35,525 INFO L226 Difference]: Without dead ends: 2570 [2022-11-16 11:13:35,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:13:35,538 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1707 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 3177 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:35,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1726 Valid, 1583 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3177 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-16 11:13:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2022-11-16 11:13:35,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1801. [2022-11-16 11:13:35,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1656 states have (on average 1.5724637681159421) internal successors, (2604), 1661 states have internal predecessors, (2604), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-11-16 11:13:35,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2837 transitions. [2022-11-16 11:13:35,821 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2837 transitions. Word has length 177 [2022-11-16 11:13:35,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:35,821 INFO L495 AbstractCegarLoop]: Abstraction has 1801 states and 2837 transitions. [2022-11-16 11:13:35,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:35,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2837 transitions. [2022-11-16 11:13:35,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:13:35,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:35,825 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, 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, 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] [2022-11-16 11:13:35,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:13:35,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:35,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1733381319, now seen corresponding path program 1 times [2022-11-16 11:13:35,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:35,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968107587] [2022-11-16 11:13:35,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:35,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:13:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:36,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:13:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:13:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:13:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:13:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:36,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:36,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968107587] [2022-11-16 11:13:36,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968107587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:36,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:36,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:36,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987237575] [2022-11-16 11:13:36,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:36,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:36,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:36,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:36,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:36,178 INFO L87 Difference]: Start difference. First operand 1801 states and 2837 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:41,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:41,700 INFO L93 Difference]: Finished difference Result 6239 states and 9981 transitions. [2022-11-16 11:13:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:13:41,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-11-16 11:13:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:41,722 INFO L225 Difference]: With dead ends: 6239 [2022-11-16 11:13:41,722 INFO L226 Difference]: Without dead ends: 4458 [2022-11-16 11:13:41,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:13:41,731 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1593 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3571 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 3636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:41,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 2417 Invalid, 3636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3571 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 11:13:41,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2022-11-16 11:13:42,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 3200. [2022-11-16 11:13:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2943 states have (on average 1.5677879714576963) internal successors, (4614), 2952 states have internal predecessors, (4614), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-11-16 11:13:42,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5037 transitions. [2022-11-16 11:13:42,299 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5037 transitions. Word has length 177 [2022-11-16 11:13:42,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:42,299 INFO L495 AbstractCegarLoop]: Abstraction has 3200 states and 5037 transitions. [2022-11-16 11:13:42,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:42,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5037 transitions. [2022-11-16 11:13:42,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:13:42,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:42,304 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, 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, 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] [2022-11-16 11:13:42,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:13:42,304 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:42,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:42,305 INFO L85 PathProgramCache]: Analyzing trace with hash 160952567, now seen corresponding path program 1 times [2022-11-16 11:13:42,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:42,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020983879] [2022-11-16 11:13:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:42,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:13:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:42,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:13:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:42,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:13:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:13:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:42,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:13:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:42,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:42,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020983879] [2022-11-16 11:13:42,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020983879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:42,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:42,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:42,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777707349] [2022-11-16 11:13:42,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:42,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:42,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:42,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:42,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:42,654 INFO L87 Difference]: Start difference. First operand 3200 states and 5037 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:49,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:49,048 INFO L93 Difference]: Finished difference Result 11405 states and 18211 transitions. [2022-11-16 11:13:49,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:13:49,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-11-16 11:13:49,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:49,089 INFO L225 Difference]: With dead ends: 11405 [2022-11-16 11:13:49,089 INFO L226 Difference]: Without dead ends: 8225 [2022-11-16 11:13:49,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:13:49,101 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1589 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 3608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:49,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 2417 Invalid, 3608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 11:13:49,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8225 states. [2022-11-16 11:13:49,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8225 to 6012. [2022-11-16 11:13:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 5531 states have (on average 1.5653588862773458) internal successors, (8658), 5548 states have internal predecessors, (8658), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-11-16 11:13:49,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 9479 transitions. [2022-11-16 11:13:49,965 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 9479 transitions. Word has length 177 [2022-11-16 11:13:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:49,965 INFO L495 AbstractCegarLoop]: Abstraction has 6012 states and 9479 transitions. [2022-11-16 11:13:49,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:49,965 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 9479 transitions. [2022-11-16 11:13:49,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:13:49,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:49,971 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, 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, 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] [2022-11-16 11:13:49,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:13:49,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:49,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash -762214859, now seen corresponding path program 1 times [2022-11-16 11:13:49,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:49,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613744398] [2022-11-16 11:13:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:49,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:13:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:50,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:13:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:13:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:50,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:13:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:50,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:13:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:50,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:50,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613744398] [2022-11-16 11:13:50,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613744398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:50,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:50,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:50,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523661237] [2022-11-16 11:13:50,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:50,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:50,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:50,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:50,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:50,357 INFO L87 Difference]: Start difference. First operand 6012 states and 9479 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:57,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:57,426 INFO L93 Difference]: Finished difference Result 21755 states and 34763 transitions. [2022-11-16 11:13:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:13:57,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-11-16 11:13:57,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:57,504 INFO L225 Difference]: With dead ends: 21755 [2022-11-16 11:13:57,504 INFO L226 Difference]: Without dead ends: 15763 [2022-11-16 11:13:57,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:13:57,528 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1588 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3530 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 3595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:57,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 2417 Invalid, 3595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3530 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 11:13:57,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15763 states. [2022-11-16 11:13:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15763 to 11649. [2022-11-16 11:13:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11649 states, 10720 states have (on average 1.5638059701492537) internal successors, (16764), 10753 states have internal predecessors, (16764), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-16 11:13:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11649 states to 11649 states and 18435 transitions. [2022-11-16 11:13:59,235 INFO L78 Accepts]: Start accepts. Automaton has 11649 states and 18435 transitions. Word has length 177 [2022-11-16 11:13:59,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:59,235 INFO L495 AbstractCegarLoop]: Abstraction has 11649 states and 18435 transitions. [2022-11-16 11:13:59,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:13:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 11649 states and 18435 transitions. [2022-11-16 11:13:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:13:59,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:59,246 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, 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, 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] [2022-11-16 11:13:59,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:13:59,246 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:59,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:59,247 INFO L85 PathProgramCache]: Analyzing trace with hash -376352457, now seen corresponding path program 1 times [2022-11-16 11:13:59,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:59,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098251251] [2022-11-16 11:13:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:59,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:59,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:13:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:13:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:59,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:13:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:59,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:13:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:13:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:59,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:59,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098251251] [2022-11-16 11:13:59,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098251251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:59,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:59,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:59,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034042294] [2022-11-16 11:13:59,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:59,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:59,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:59,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:59,564 INFO L87 Difference]: Start difference. First operand 11649 states and 18435 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:14:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:08,946 INFO L93 Difference]: Finished difference Result 42454 states and 68057 transitions. [2022-11-16 11:14:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:14:08,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-11-16 11:14:08,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:09,084 INFO L225 Difference]: With dead ends: 42454 [2022-11-16 11:14:09,084 INFO L226 Difference]: Without dead ends: 30825 [2022-11-16 11:14:09,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:14:09,131 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1587 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3517 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:09,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 2417 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3517 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 11:14:09,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30825 states. [2022-11-16 11:14:12,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30825 to 22954. [2022-11-16 11:14:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22954 states, 21129 states have (on average 1.562875668512471) internal successors, (33022), 21194 states have internal predecessors, (33022), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-11-16 11:14:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22954 states to 22954 states and 36555 transitions. [2022-11-16 11:14:12,316 INFO L78 Accepts]: Start accepts. Automaton has 22954 states and 36555 transitions. Word has length 177 [2022-11-16 11:14:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:12,316 INFO L495 AbstractCegarLoop]: Abstraction has 22954 states and 36555 transitions. [2022-11-16 11:14:12,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:14:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 22954 states and 36555 transitions. [2022-11-16 11:14:12,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:14:12,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:12,334 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, 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, 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] [2022-11-16 11:14:12,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:14:12,334 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:14:12,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:12,335 INFO L85 PathProgramCache]: Analyzing trace with hash -640999947, now seen corresponding path program 1 times [2022-11-16 11:14:12,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:12,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831104149] [2022-11-16 11:14:12,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:12,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:12,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:14:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:12,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:14:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:12,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:14:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:14:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:14:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:12,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:12,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831104149] [2022-11-16 11:14:12,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831104149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:12,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:12,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:14:12,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608396555] [2022-11-16 11:14:12,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:12,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:14:12,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:12,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:14:12,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:14:12,614 INFO L87 Difference]: Start difference. First operand 22954 states and 36555 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:14:26,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:14:26,987 INFO L93 Difference]: Finished difference Result 83853 states and 135247 transitions. [2022-11-16 11:14:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:14:26,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-11-16 11:14:26,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:14:27,293 INFO L225 Difference]: With dead ends: 83853 [2022-11-16 11:14:27,293 INFO L226 Difference]: Without dead ends: 60919 [2022-11-16 11:14:27,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:14:27,377 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1586 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 3504 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 3569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:14:27,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 2417 Invalid, 3569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3504 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 11:14:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60919 states. [2022-11-16 11:14:33,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60919 to 45627. [2022-11-16 11:14:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45627 states, 42010 states have (on average 1.562294691740062) internal successors, (65632), 42139 states have internal predecessors, (65632), 2714 states have call successors, (2714), 774 states have call predecessors, (2714), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-11-16 11:14:33,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45627 states to 45627 states and 73375 transitions. [2022-11-16 11:14:33,953 INFO L78 Accepts]: Start accepts. Automaton has 45627 states and 73375 transitions. Word has length 177 [2022-11-16 11:14:33,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:14:33,953 INFO L495 AbstractCegarLoop]: Abstraction has 45627 states and 73375 transitions. [2022-11-16 11:14:33,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 11:14:33,954 INFO L276 IsEmpty]: Start isEmpty. Operand 45627 states and 73375 transitions. [2022-11-16 11:14:33,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-16 11:14:33,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:14:33,988 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, 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, 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] [2022-11-16 11:14:33,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:14:33,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:14:33,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:14:33,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1290125687, now seen corresponding path program 1 times [2022-11-16 11:14:33,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:14:33,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291253933] [2022-11-16 11:14:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:14:33,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:14:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:34,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:14:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:34,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 11:14:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:34,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:14:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:34,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:14:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-16 11:14:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:14:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:14:34,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:14:34,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291253933] [2022-11-16 11:14:34,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291253933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:14:34,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:14:34,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:14:34,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928146493] [2022-11-16 11:14:34,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:14:34,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:14:34,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:14:34,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:14:34,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:14:34,322 INFO L87 Difference]: Start difference. First operand 45627 states and 73375 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)