./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d2558e20908ca51bd715f698f032e0721784debd5f3c1dc69de7f261de8133a0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:15:58,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:15:58,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:15:58,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:15:58,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:15:58,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:15:58,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:15:58,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:15:58,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:15:58,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:15:58,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:15:58,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:15:58,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:15:58,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:15:58,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:15:58,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:15:58,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:15:58,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:15:58,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:15:58,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:15:58,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:15:58,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:15:58,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:15:58,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:15:58,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:15:58,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:15:58,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:15:58,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:15:58,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:15:58,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:15:58,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:15:58,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:15:58,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:15:58,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:15:58,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:15:58,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:15:58,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:15:58,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:15:58,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:15:58,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:15:58,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:15:58,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:15:58,260 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:15:58,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:15:58,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:15:58,261 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:15:58,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:15:58,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:15:58,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:15:58,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:15:58,263 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:15:58,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:15:58,264 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:15:58,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:15:58,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:15:58,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:15:58,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:15:58,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:15:58,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:15:58,271 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:15:58,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:15:58,271 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:15:58,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:15:58,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:15:58,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:15:58,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:15:58,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:58,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:15:58,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:15:58,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:15:58,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:15:58,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:15:58,275 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:15:58,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:15:58,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:15:58,276 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_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2558e20908ca51bd715f698f032e0721784debd5f3c1dc69de7f261de8133a0 [2022-10-17 10:15:58,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:15:58,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:15:58,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:15:58,593 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:15:58,594 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:15:58,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-2.c [2022-10-17 10:15:58,701 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/data/d0eae98db/b3d05f0b5d9e4d5b864cfdd8bb06184f/FLAGe1f865f98 [2022-10-17 10:15:59,454 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:15:59,455 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-2.c [2022-10-17 10:15:59,488 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/data/d0eae98db/b3d05f0b5d9e4d5b864cfdd8bb06184f/FLAGe1f865f98 [2022-10-17 10:15:59,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/data/d0eae98db/b3d05f0b5d9e4d5b864cfdd8bb06184f [2022-10-17 10:15:59,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:15:59,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:15:59,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:59,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:15:59,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:15:59,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:59" (1/1) ... [2022-10-17 10:15:59,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52301f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:59, skipping insertion in model container [2022-10-17 10:15:59,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:59" (1/1) ... [2022-10-17 10:15:59,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:15:59,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:16:00,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-2.c[74369,74382] [2022-10-17 10:16:00,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:16:00,345 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:16:00,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-2.c[74369,74382] [2022-10-17 10:16:00,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:16:00,619 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:16:00,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00 WrapperNode [2022-10-17 10:16:00,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:16:00,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:16:00,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:16:00,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:16:00,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00" (1/1) ... [2022-10-17 10:16:00,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00" (1/1) ... [2022-10-17 10:16:00,758 INFO L138 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 792 [2022-10-17 10:16:00,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:16:00,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:16:00,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:16:00,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:16:00,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00" (1/1) ... [2022-10-17 10:16:00,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00" (1/1) ... [2022-10-17 10:16:00,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00" (1/1) ... [2022-10-17 10:16:00,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00" (1/1) ... [2022-10-17 10:16:00,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00" (1/1) ... [2022-10-17 10:16:00,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00" (1/1) ... [2022-10-17 10:16:00,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00" (1/1) ... [2022-10-17 10:16:00,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00" (1/1) ... [2022-10-17 10:16:00,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:16:00,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:16:00,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:16:00,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:16:00,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00" (1/1) ... [2022-10-17 10:16:00,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:16:00,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:00,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:16:00,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b2768f7-6d24-48cf-9504-71e6c554180a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:16:00,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:16:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:16:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:16:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:16:00,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:16:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:16:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:16:00,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:16:00,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:16:01,217 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:16:01,220 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:16:01,242 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:16:04,314 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-10-17 10:16:04,316 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-10-17 10:16:04,316 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:16:04,331 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:16:04,331 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:16:04,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:04 BoogieIcfgContainer [2022-10-17 10:16:04,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:16:04,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:16:04,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:16:04,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:16:04,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:15:59" (1/3) ... [2022-10-17 10:16:04,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a774b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:16:04, skipping insertion in model container [2022-10-17 10:16:04,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:00" (2/3) ... [2022-10-17 10:16:04,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a774b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:16:04, skipping insertion in model container [2022-10-17 10:16:04,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:04" (3/3) ... [2022-10-17 10:16:04,347 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-2.c [2022-10-17 10:16:04,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:16:04,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:16:04,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:16:04,476 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;@4c9470b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:16:04,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:16:04,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:04,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-17 10:16:04,496 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:04,497 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] [2022-10-17 10:16:04,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:04,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash -442385417, now seen corresponding path program 1 times [2022-10-17 10:16:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:04,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461372559] [2022-10-17 10:16:04,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:04,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:05,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:05,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:05,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461372559] [2022-10-17 10:16:05,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461372559] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:05,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:05,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:05,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421456222] [2022-10-17 10:16:05,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:05,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:05,921 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:07,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:07,403 INFO L93 Difference]: Finished difference Result 421 states and 717 transitions. [2022-10-17 10:16:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:07,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-10-17 10:16:07,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:07,422 INFO L225 Difference]: With dead ends: 421 [2022-10-17 10:16:07,422 INFO L226 Difference]: Without dead ends: 256 [2022-10-17 10:16:07,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:07,431 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 169 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:07,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 439 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:16:07,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-10-17 10:16:07,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 165. [2022-10-17 10:16:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5853658536585367) internal successors, (260), 164 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 260 transitions. [2022-10-17 10:16:07,517 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 260 transitions. Word has length 37 [2022-10-17 10:16:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:07,518 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 260 transitions. [2022-10-17 10:16:07,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 260 transitions. [2022-10-17 10:16:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-17 10:16:07,524 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:07,524 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] [2022-10-17 10:16:07,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:16:07,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:07,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:07,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1559591931, now seen corresponding path program 1 times [2022-10-17 10:16:07,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:07,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586036917] [2022-10-17 10:16:07,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:07,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:08,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:08,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586036917] [2022-10-17 10:16:08,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586036917] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:08,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:08,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:08,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327725684] [2022-10-17 10:16:08,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:08,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:08,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:08,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:08,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:08,144 INFO L87 Difference]: Start difference. First operand 165 states and 260 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:09,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:16:09,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:09,773 INFO L93 Difference]: Finished difference Result 439 states and 692 transitions. [2022-10-17 10:16:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:09,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-10-17 10:16:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:09,777 INFO L225 Difference]: With dead ends: 439 [2022-10-17 10:16:09,777 INFO L226 Difference]: Without dead ends: 284 [2022-10-17 10:16:09,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:09,780 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 134 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:09,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 330 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 10:16:09,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-10-17 10:16:09,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 194. [2022-10-17 10:16:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.616580310880829) internal successors, (312), 193 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 312 transitions. [2022-10-17 10:16:09,802 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 312 transitions. Word has length 38 [2022-10-17 10:16:09,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:09,803 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 312 transitions. [2022-10-17 10:16:09,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 312 transitions. [2022-10-17 10:16:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 10:16:09,806 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:09,807 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] [2022-10-17 10:16:09,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:16:09,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:09,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash 917746377, now seen corresponding path program 1 times [2022-10-17 10:16:09,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:09,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78464076] [2022-10-17 10:16:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:09,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:10,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:10,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:10,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78464076] [2022-10-17 10:16:10,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78464076] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:10,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:10,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213753936] [2022-10-17 10:16:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:10,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:10,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:10,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:10,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:10,211 INFO L87 Difference]: Start difference. First operand 194 states and 312 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:12,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:16:12,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:12,604 INFO L93 Difference]: Finished difference Result 406 states and 651 transitions. [2022-10-17 10:16:12,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:12,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-10-17 10:16:12,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:12,608 INFO L225 Difference]: With dead ends: 406 [2022-10-17 10:16:12,608 INFO L226 Difference]: Without dead ends: 222 [2022-10-17 10:16:12,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:12,611 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 22 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:12,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 469 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 150 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-10-17 10:16:12,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-10-17 10:16:12,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2022-10-17 10:16:12,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.6225490196078431) internal successors, (331), 204 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:12,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 331 transitions. [2022-10-17 10:16:12,627 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 331 transitions. Word has length 44 [2022-10-17 10:16:12,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:12,628 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 331 transitions. [2022-10-17 10:16:12,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:12,629 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 331 transitions. [2022-10-17 10:16:12,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-17 10:16:12,631 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:12,632 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:12,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:16:12,632 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:12,633 INFO L85 PathProgramCache]: Analyzing trace with hash 868700126, now seen corresponding path program 1 times [2022-10-17 10:16:12,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:12,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063401217] [2022-10-17 10:16:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:12,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:13,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:13,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:13,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063401217] [2022-10-17 10:16:13,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063401217] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:13,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:13,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:13,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523870488] [2022-10-17 10:16:13,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:13,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:13,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:13,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:13,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:13,101 INFO L87 Difference]: Start difference. First operand 205 states and 331 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:14,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:16:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:14,551 INFO L93 Difference]: Finished difference Result 406 states and 650 transitions. [2022-10-17 10:16:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:14,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-10-17 10:16:14,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:14,554 INFO L225 Difference]: With dead ends: 406 [2022-10-17 10:16:14,554 INFO L226 Difference]: Without dead ends: 222 [2022-10-17 10:16:14,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:14,556 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 24 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:14,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 471 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:16:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-10-17 10:16:14,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2022-10-17 10:16:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.6176470588235294) internal successors, (330), 204 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 330 transitions. [2022-10-17 10:16:14,568 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 330 transitions. Word has length 57 [2022-10-17 10:16:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:14,568 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 330 transitions. [2022-10-17 10:16:14,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 330 transitions. [2022-10-17 10:16:14,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-17 10:16:14,571 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:14,572 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:14,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:16:14,572 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:14,573 INFO L85 PathProgramCache]: Analyzing trace with hash 642771885, now seen corresponding path program 1 times [2022-10-17 10:16:14,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:14,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690580259] [2022-10-17 10:16:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:14,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:15,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:15,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690580259] [2022-10-17 10:16:15,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690580259] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:15,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:15,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:15,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214070335] [2022-10-17 10:16:15,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:15,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:15,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:15,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:15,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:15,143 INFO L87 Difference]: Start difference. First operand 205 states and 330 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:16,472 INFO L93 Difference]: Finished difference Result 405 states and 648 transitions. [2022-10-17 10:16:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:16,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-10-17 10:16:16,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:16,475 INFO L225 Difference]: With dead ends: 405 [2022-10-17 10:16:16,476 INFO L226 Difference]: Without dead ends: 221 [2022-10-17 10:16:16,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:16,477 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 28 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:16,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 473 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 10:16:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-10-17 10:16:16,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2022-10-17 10:16:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.6127450980392157) internal successors, (329), 204 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 329 transitions. [2022-10-17 10:16:16,493 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 329 transitions. Word has length 58 [2022-10-17 10:16:16,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:16,501 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 329 transitions. [2022-10-17 10:16:16,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 329 transitions. [2022-10-17 10:16:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-17 10:16:16,506 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:16,507 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:16,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:16:16,507 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash -404738919, now seen corresponding path program 1 times [2022-10-17 10:16:16,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:16,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826673434] [2022-10-17 10:16:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:16,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:17,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:17,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826673434] [2022-10-17 10:16:17,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826673434] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:17,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:17,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:17,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031318567] [2022-10-17 10:16:17,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:17,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:17,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:17,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:17,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:17,067 INFO L87 Difference]: Start difference. First operand 205 states and 329 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:19,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:16:19,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:19,636 INFO L93 Difference]: Finished difference Result 479 states and 760 transitions. [2022-10-17 10:16:19,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:19,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-10-17 10:16:19,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:19,640 INFO L225 Difference]: With dead ends: 479 [2022-10-17 10:16:19,640 INFO L226 Difference]: Without dead ends: 295 [2022-10-17 10:16:19,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:19,642 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 150 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:19,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 330 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 261 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-10-17 10:16:19,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-10-17 10:16:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 205. [2022-10-17 10:16:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5980392156862746) internal successors, (326), 204 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 326 transitions. [2022-10-17 10:16:19,654 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 326 transitions. Word has length 58 [2022-10-17 10:16:19,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:19,654 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 326 transitions. [2022-10-17 10:16:19,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:19,655 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 326 transitions. [2022-10-17 10:16:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-17 10:16:19,656 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:19,656 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:19,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:16:19,657 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:19,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:19,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1540605214, now seen corresponding path program 1 times [2022-10-17 10:16:19,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:19,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304924590] [2022-10-17 10:16:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:19,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:20,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:20,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304924590] [2022-10-17 10:16:20,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304924590] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:20,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:20,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:20,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217240593] [2022-10-17 10:16:20,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:20,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:20,098 INFO L87 Difference]: Start difference. First operand 205 states and 326 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:21,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:16:21,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:21,655 INFO L93 Difference]: Finished difference Result 478 states and 754 transitions. [2022-10-17 10:16:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:21,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-10-17 10:16:21,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:21,658 INFO L225 Difference]: With dead ends: 478 [2022-10-17 10:16:21,659 INFO L226 Difference]: Without dead ends: 294 [2022-10-17 10:16:21,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:21,660 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:21,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 10:16:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-10-17 10:16:21,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2022-10-17 10:16:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5833333333333333) internal successors, (323), 204 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2022-10-17 10:16:21,671 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 58 [2022-10-17 10:16:21,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:21,672 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2022-10-17 10:16:21,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:21,672 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2022-10-17 10:16:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-17 10:16:21,673 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:21,674 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:21,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:16:21,674 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:21,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:21,675 INFO L85 PathProgramCache]: Analyzing trace with hash -219751902, now seen corresponding path program 1 times [2022-10-17 10:16:21,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:21,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061615680] [2022-10-17 10:16:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:21,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:22,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:22,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061615680] [2022-10-17 10:16:22,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061615680] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:22,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:22,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:22,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987248700] [2022-10-17 10:16:22,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:22,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:22,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:22,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:22,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:22,096 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:23,278 INFO L93 Difference]: Finished difference Result 478 states and 749 transitions. [2022-10-17 10:16:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:23,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-10-17 10:16:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:23,281 INFO L225 Difference]: With dead ends: 478 [2022-10-17 10:16:23,282 INFO L226 Difference]: Without dead ends: 294 [2022-10-17 10:16:23,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:23,283 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:23,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-17 10:16:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-10-17 10:16:23,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2022-10-17 10:16:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5686274509803921) internal successors, (320), 204 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 320 transitions. [2022-10-17 10:16:23,294 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 320 transitions. Word has length 58 [2022-10-17 10:16:23,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:23,294 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 320 transitions. [2022-10-17 10:16:23,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 320 transitions. [2022-10-17 10:16:23,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-10-17 10:16:23,296 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:23,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:23,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:16:23,296 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:23,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:23,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1716593643, now seen corresponding path program 1 times [2022-10-17 10:16:23,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:23,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34231243] [2022-10-17 10:16:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:23,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:23,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:23,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34231243] [2022-10-17 10:16:23,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34231243] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:23,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:23,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:23,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201649048] [2022-10-17 10:16:23,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:23,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:23,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:23,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:23,710 INFO L87 Difference]: Start difference. First operand 205 states and 320 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:25,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:25,097 INFO L93 Difference]: Finished difference Result 478 states and 744 transitions. [2022-10-17 10:16:25,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:25,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-10-17 10:16:25,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:25,100 INFO L225 Difference]: With dead ends: 478 [2022-10-17 10:16:25,100 INFO L226 Difference]: Without dead ends: 294 [2022-10-17 10:16:25,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:25,102 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 146 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:25,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-17 10:16:25,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-10-17 10:16:25,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2022-10-17 10:16:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.553921568627451) internal successors, (317), 204 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 317 transitions. [2022-10-17 10:16:25,113 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 317 transitions. Word has length 59 [2022-10-17 10:16:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:25,114 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 317 transitions. [2022-10-17 10:16:25,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:25,114 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 317 transitions. [2022-10-17 10:16:25,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-17 10:16:25,115 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:25,115 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:25,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:16:25,116 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1056186316, now seen corresponding path program 1 times [2022-10-17 10:16:25,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:25,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430273251] [2022-10-17 10:16:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:25,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:25,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:25,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:25,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430273251] [2022-10-17 10:16:25,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430273251] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:25,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:25,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:25,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433079216] [2022-10-17 10:16:25,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:25,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:25,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:25,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:25,512 INFO L87 Difference]: Start difference. First operand 205 states and 317 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:27,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:16:27,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:27,813 INFO L93 Difference]: Finished difference Result 402 states and 624 transitions. [2022-10-17 10:16:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:27,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-10-17 10:16:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:27,817 INFO L225 Difference]: With dead ends: 402 [2022-10-17 10:16:27,817 INFO L226 Difference]: Without dead ends: 218 [2022-10-17 10:16:27,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:27,818 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 20 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:27,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 479 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-10-17 10:16:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-10-17 10:16:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 205. [2022-10-17 10:16:27,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5490196078431373) internal successors, (316), 204 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 316 transitions. [2022-10-17 10:16:27,827 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 316 transitions. Word has length 60 [2022-10-17 10:16:27,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:27,828 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 316 transitions. [2022-10-17 10:16:27,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:27,828 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 316 transitions. [2022-10-17 10:16:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 10:16:27,829 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:27,829 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:27,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:16:27,830 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:27,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:27,830 INFO L85 PathProgramCache]: Analyzing trace with hash 614802448, now seen corresponding path program 1 times [2022-10-17 10:16:27,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:27,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424756296] [2022-10-17 10:16:27,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:27,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:28,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:28,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424756296] [2022-10-17 10:16:28,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424756296] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:28,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:28,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:28,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931600289] [2022-10-17 10:16:28,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:28,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:28,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:28,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:28,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:28,267 INFO L87 Difference]: Start difference. First operand 205 states and 316 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:29,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:16:29,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:29,896 INFO L93 Difference]: Finished difference Result 478 states and 738 transitions. [2022-10-17 10:16:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:29,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-10-17 10:16:29,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:29,899 INFO L225 Difference]: With dead ends: 478 [2022-10-17 10:16:29,900 INFO L226 Difference]: Without dead ends: 294 [2022-10-17 10:16:29,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:29,901 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:29,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-17 10:16:29,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-10-17 10:16:29,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2022-10-17 10:16:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5343137254901962) internal successors, (313), 204 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:29,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 313 transitions. [2022-10-17 10:16:29,933 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 313 transitions. Word has length 61 [2022-10-17 10:16:29,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:29,933 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 313 transitions. [2022-10-17 10:16:29,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:29,934 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 313 transitions. [2022-10-17 10:16:29,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 10:16:29,939 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:29,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:29,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:16:29,940 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:29,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1287801256, now seen corresponding path program 1 times [2022-10-17 10:16:29,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:29,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492401222] [2022-10-17 10:16:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:29,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:30,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:30,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492401222] [2022-10-17 10:16:30,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492401222] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:30,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:30,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:30,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139221555] [2022-10-17 10:16:30,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:30,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:30,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:30,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:30,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:30,289 INFO L87 Difference]: Start difference. First operand 205 states and 313 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)