./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN --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 e0c7c69d3788b9174ce50b7ab42b39214a13bc3eceec60ee173c8e1ad7db186a --- 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-6b4ec56 [2022-11-20 10:57:10,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:57:10,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:57:10,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:57:10,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:57:10,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:57:10,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:57:10,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:57:10,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:57:10,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:57:10,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:57:10,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:57:10,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:57:10,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:57:10,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:57:10,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:57:10,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:57:10,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:57:10,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:57:10,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:57:10,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:57:10,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:57:10,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:57:10,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:57:10,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:57:10,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:57:10,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:57:10,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:57:10,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:57:10,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:57:10,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:57:10,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:57:10,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:57:10,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:57:10,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:57:10,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:57:10,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:57:10,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:57:10,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:57:10,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:57:10,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:57:10,202 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:57:10,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:57:10,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:57:10,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:57:10,234 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:57:10,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:57:10,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:57:10,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:57:10,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:57:10,237 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:57:10,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:57:10,238 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:57:10,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:57:10,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:57:10,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:57:10,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:57:10,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:57:10,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:57:10,240 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:57:10,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:57:10,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:57:10,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:57:10,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:57:10,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:57:10,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:57:10,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:57:10,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:57:10,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:57:10,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:57:10,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:57:10,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:57:10,244 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:57:10,245 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:57:10,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:57:10,245 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_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0c7c69d3788b9174ce50b7ab42b39214a13bc3eceec60ee173c8e1ad7db186a [2022-11-20 10:57:10,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:57:10,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:57:10,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:57:10,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:57:10,568 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:57:10,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c [2022-11-20 10:57:13,924 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:57:14,516 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:57:14,517 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c [2022-11-20 10:57:14,551 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/data/48baa446a/a6cfd632a87d4bb7ad7250bdd4765ade/FLAG686f010d9 [2022-11-20 10:57:14,576 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/data/48baa446a/a6cfd632a87d4bb7ad7250bdd4765ade [2022-11-20 10:57:14,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:57:14,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:57:14,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:57:14,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:57:14,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:57:14,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:57:14" (1/1) ... [2022-11-20 10:57:14,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20046a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:14, skipping insertion in model container [2022-11-20 10:57:14,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:57:14" (1/1) ... [2022-11-20 10:57:14,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:57:14,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:57:15,244 WARN L237 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_ed1f2198-9e02-4154-8255-9f470d196f12/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c[8712,8725] [2022-11-20 10:57:15,298 WARN L237 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_ed1f2198-9e02-4154-8255-9f470d196f12/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c[14267,14280] [2022-11-20 10:57:16,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:57:16,274 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:57:16,317 WARN L237 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_ed1f2198-9e02-4154-8255-9f470d196f12/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c[8712,8725] [2022-11-20 10:57:16,335 WARN L237 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_ed1f2198-9e02-4154-8255-9f470d196f12/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c[14267,14280] [2022-11-20 10:57:16,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:57:16,978 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:57:16,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16 WrapperNode [2022-11-20 10:57:16,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:57:16,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:57:16,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:57:16,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:57:16,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16" (1/1) ... [2022-11-20 10:57:17,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16" (1/1) ... [2022-11-20 10:57:17,466 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5015 [2022-11-20 10:57:17,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:57:17,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:57:17,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:57:17,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:57:17,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16" (1/1) ... [2022-11-20 10:57:17,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16" (1/1) ... [2022-11-20 10:57:17,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16" (1/1) ... [2022-11-20 10:57:17,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16" (1/1) ... [2022-11-20 10:57:17,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16" (1/1) ... [2022-11-20 10:57:17,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16" (1/1) ... [2022-11-20 10:57:17,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16" (1/1) ... [2022-11-20 10:57:17,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16" (1/1) ... [2022-11-20 10:57:18,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:57:18,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:57:18,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:57:18,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:57:18,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16" (1/1) ... [2022-11-20 10:57:18,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:57:18,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:18,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:57:18,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:57:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:57:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:57:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:57:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:57:18,521 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:57:18,523 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:57:24,642 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:57:24,662 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:57:24,662 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:57:24,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:57:24 BoogieIcfgContainer [2022-11-20 10:57:24,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:57:24,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:57:24,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:57:24,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:57:24,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:57:14" (1/3) ... [2022-11-20 10:57:24,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6763460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:57:24, skipping insertion in model container [2022-11-20 10:57:24,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:57:16" (2/3) ... [2022-11-20 10:57:24,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6763460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:57:24, skipping insertion in model container [2022-11-20 10:57:24,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:57:24" (3/3) ... [2022-11-20 10:57:24,677 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c [2022-11-20 10:57:24,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:57:24,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 10:57:24,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:57:24,793 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;@5bcf5cb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:57:24,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 10:57:24,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 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) [2022-11-20 10:57:24,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 10:57:24,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:24,818 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] [2022-11-20 10:57:24,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:24,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash 593970293, now seen corresponding path program 1 times [2022-11-20 10:57:24,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:24,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644382679] [2022-11-20 10:57:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:24,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:25,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:25,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644382679] [2022-11-20 10:57:25,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644382679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:25,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:25,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:57:25,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639134947] [2022-11-20 10:57:25,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:25,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:57:25,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:57:25,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:57:25,187 INFO L87 Difference]: Start difference. First operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 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 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2022-11-20 10:57:25,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:25,337 INFO L93 Difference]: Finished difference Result 1743 states and 3312 transitions. [2022-11-20 10:57:25,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:57:25,340 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2022-11-20 10:57:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:25,365 INFO L225 Difference]: With dead ends: 1743 [2022-11-20 10:57:25,366 INFO L226 Difference]: Without dead ends: 821 [2022-11-20 10:57:25,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:57:25,387 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:25,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:25,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-20 10:57:25,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2022-11-20 10:57:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8937728937728937) internal successors, (1551), 820 states have internal predecessors, (1551), 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) [2022-11-20 10:57:25,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1551 transitions. [2022-11-20 10:57:25,503 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1551 transitions. Word has length 22 [2022-11-20 10:57:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:25,505 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1551 transitions. [2022-11-20 10:57:25,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2022-11-20 10:57:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1551 transitions. [2022-11-20 10:57:25,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 10:57:25,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:25,508 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] [2022-11-20 10:57:25,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:57:25,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:25,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:25,510 INFO L85 PathProgramCache]: Analyzing trace with hash -427098061, now seen corresponding path program 1 times [2022-11-20 10:57:25,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:25,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895688449] [2022-11-20 10:57:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:25,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:25,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:25,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:25,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895688449] [2022-11-20 10:57:25,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895688449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:25,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:25,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:57:25,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666000450] [2022-11-20 10:57:25,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:25,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:57:25,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:25,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:57:25,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:57:25,737 INFO L87 Difference]: Start difference. First operand 821 states and 1551 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-11-20 10:57:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:25,898 INFO L93 Difference]: Finished difference Result 863 states and 1615 transitions. [2022-11-20 10:57:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:57:25,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2022-11-20 10:57:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:25,903 INFO L225 Difference]: With dead ends: 863 [2022-11-20 10:57:25,904 INFO L226 Difference]: Without dead ends: 821 [2022-11-20 10:57:25,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:57:25,906 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 3 mSDsluCounter, 4621 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6170 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:25,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6170 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-20 10:57:25,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2022-11-20 10:57:25,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8656898656898657) internal successors, (1528), 820 states have internal predecessors, (1528), 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) [2022-11-20 10:57:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1528 transitions. [2022-11-20 10:57:25,956 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1528 transitions. Word has length 22 [2022-11-20 10:57:25,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:25,957 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1528 transitions. [2022-11-20 10:57:25,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2022-11-20 10:57:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1528 transitions. [2022-11-20 10:57:25,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 10:57:25,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:25,959 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] [2022-11-20 10:57:25,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:57:25,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:25,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:25,961 INFO L85 PathProgramCache]: Analyzing trace with hash 3301806, now seen corresponding path program 1 times [2022-11-20 10:57:25,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:25,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513261760] [2022-11-20 10:57:25,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:25,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:26,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:26,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513261760] [2022-11-20 10:57:26,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513261760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:26,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:26,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:57:26,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985437079] [2022-11-20 10:57:26,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:26,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:26,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:26,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:26,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:26,268 INFO L87 Difference]: Start difference. First operand 821 states and 1528 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2022-11-20 10:57:26,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:26,662 INFO L93 Difference]: Finished difference Result 1125 states and 2008 transitions. [2022-11-20 10:57:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:57:26,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 [2022-11-20 10:57:26,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:26,668 INFO L225 Difference]: With dead ends: 1125 [2022-11-20 10:57:26,668 INFO L226 Difference]: Without dead ends: 1087 [2022-11-20 10:57:26,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:57:26,671 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 6285 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6285 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:26,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6285 Valid, 2135 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:57:26,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-11-20 10:57:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 857. [2022-11-20 10:57:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 855 states have (on average 1.8538011695906433) internal successors, (1585), 856 states have internal predecessors, (1585), 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) [2022-11-20 10:57:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1585 transitions. [2022-11-20 10:57:26,715 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1585 transitions. Word has length 44 [2022-11-20 10:57:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:26,716 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1585 transitions. [2022-11-20 10:57:26,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2022-11-20 10:57:26,717 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1585 transitions. [2022-11-20 10:57:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 10:57:26,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:26,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:26,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:57:26,719 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:26,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:26,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1757336638, now seen corresponding path program 1 times [2022-11-20 10:57:26,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:26,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169305054] [2022-11-20 10:57:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:26,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:26,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:26,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169305054] [2022-11-20 10:57:26,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169305054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:26,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:26,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:26,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076855525] [2022-11-20 10:57:26,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:26,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:26,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:26,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:26,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:26,838 INFO L87 Difference]: Start difference. First operand 857 states and 1585 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2022-11-20 10:57:26,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:26,899 INFO L93 Difference]: Finished difference Result 994 states and 1800 transitions. [2022-11-20 10:57:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:26,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2022-11-20 10:57:26,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:26,904 INFO L225 Difference]: With dead ends: 994 [2022-11-20 10:57:26,904 INFO L226 Difference]: Without dead ends: 920 [2022-11-20 10:57:26,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:26,907 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 1476 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:26,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1577 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-11-20 10:57:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 916. [2022-11-20 10:57:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8326039387308535) internal successors, (1675), 915 states have internal predecessors, (1675), 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) [2022-11-20 10:57:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1675 transitions. [2022-11-20 10:57:26,941 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1675 transitions. Word has length 46 [2022-11-20 10:57:26,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:26,942 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 1675 transitions. [2022-11-20 10:57:26,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2022-11-20 10:57:26,942 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1675 transitions. [2022-11-20 10:57:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 10:57:26,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:26,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:26,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:57:26,945 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:26,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:26,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1823830150, now seen corresponding path program 1 times [2022-11-20 10:57:26,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:26,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712972094] [2022-11-20 10:57:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:26,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:27,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:27,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712972094] [2022-11-20 10:57:27,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712972094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:27,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:27,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:57:27,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436129368] [2022-11-20 10:57:27,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:27,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:27,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:27,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:27,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:27,282 INFO L87 Difference]: Start difference. First operand 916 states and 1675 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2022-11-20 10:57:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:27,471 INFO L93 Difference]: Finished difference Result 1051 states and 1883 transitions. [2022-11-20 10:57:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:57:27,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2022-11-20 10:57:27,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:27,476 INFO L225 Difference]: With dead ends: 1051 [2022-11-20 10:57:27,477 INFO L226 Difference]: Without dead ends: 918 [2022-11-20 10:57:27,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:57:27,479 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 6008 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6008 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:27,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6008 Valid, 1690 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:57:27,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2022-11-20 10:57:27,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 916. [2022-11-20 10:57:27,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8304157549234135) internal successors, (1673), 915 states have internal predecessors, (1673), 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) [2022-11-20 10:57:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1673 transitions. [2022-11-20 10:57:27,512 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1673 transitions. Word has length 46 [2022-11-20 10:57:27,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:27,513 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 1673 transitions. [2022-11-20 10:57:27,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2022-11-20 10:57:27,513 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1673 transitions. [2022-11-20 10:57:27,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 10:57:27,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:27,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:27,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:57:27,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:27,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:27,516 INFO L85 PathProgramCache]: Analyzing trace with hash 289436656, now seen corresponding path program 1 times [2022-11-20 10:57:27,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:27,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038972914] [2022-11-20 10:57:27,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:27,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:27,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:27,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038972914] [2022-11-20 10:57:27,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038972914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:27,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:27,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:57:27,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624173176] [2022-11-20 10:57:27,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:27,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:57:27,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:27,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:57:27,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:57:27,737 INFO L87 Difference]: Start difference. First operand 916 states and 1673 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2022-11-20 10:57:27,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:27,865 INFO L93 Difference]: Finished difference Result 1045 states and 1867 transitions. [2022-11-20 10:57:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:57:27,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 47 [2022-11-20 10:57:27,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:27,871 INFO L225 Difference]: With dead ends: 1045 [2022-11-20 10:57:27,871 INFO L226 Difference]: Without dead ends: 1043 [2022-11-20 10:57:27,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:57:27,882 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 151 mSDsluCounter, 4586 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 6164 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:27,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 6164 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:27,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-11-20 10:57:27,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 922. [2022-11-20 10:57:27,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 920 states have (on average 1.8239130434782609) internal successors, (1678), 921 states have internal predecessors, (1678), 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) [2022-11-20 10:57:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1678 transitions. [2022-11-20 10:57:27,921 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1678 transitions. Word has length 47 [2022-11-20 10:57:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:27,923 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1678 transitions. [2022-11-20 10:57:27,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2022-11-20 10:57:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1678 transitions. [2022-11-20 10:57:27,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 10:57:27,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:27,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:27,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:57:27,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:27,928 INFO L85 PathProgramCache]: Analyzing trace with hash 6109941, now seen corresponding path program 1 times [2022-11-20 10:57:27,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:27,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084326410] [2022-11-20 10:57:27,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:27,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:28,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:28,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084326410] [2022-11-20 10:57:28,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084326410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:28,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:28,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:28,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40876616] [2022-11-20 10:57:28,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:28,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:57:28,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:28,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:57:28,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:57:28,168 INFO L87 Difference]: Start difference. First operand 922 states and 1678 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-11-20 10:57:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:38,155 INFO L93 Difference]: Finished difference Result 3177 states and 5987 transitions. [2022-11-20 10:57:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:57:38,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-11-20 10:57:38,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:38,168 INFO L225 Difference]: With dead ends: 3177 [2022-11-20 10:57:38,168 INFO L226 Difference]: Without dead ends: 2424 [2022-11-20 10:57:38,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:57:38,171 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 2395 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:38,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2395 Valid, 782 Invalid, 6507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-20 10:57:38,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-11-20 10:57:38,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2424. [2022-11-20 10:57:38,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2422 states have (on average 1.565648224607762) internal successors, (3792), 2423 states have internal predecessors, (3792), 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) [2022-11-20 10:57:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3792 transitions. [2022-11-20 10:57:38,246 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3792 transitions. Word has length 48 [2022-11-20 10:57:38,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:38,247 INFO L495 AbstractCegarLoop]: Abstraction has 2424 states and 3792 transitions. [2022-11-20 10:57:38,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-11-20 10:57:38,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3792 transitions. [2022-11-20 10:57:38,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 10:57:38,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:38,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:38,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:57:38,249 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:38,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:38,250 INFO L85 PathProgramCache]: Analyzing trace with hash -2036800602, now seen corresponding path program 1 times [2022-11-20 10:57:38,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:38,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14623480] [2022-11-20 10:57:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:38,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:38,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:38,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14623480] [2022-11-20 10:57:38,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14623480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:38,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:38,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:38,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846012839] [2022-11-20 10:57:38,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:38,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:38,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:38,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:38,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:38,329 INFO L87 Difference]: Start difference. First operand 2424 states and 3792 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-11-20 10:57:38,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:38,452 INFO L93 Difference]: Finished difference Result 2686 states and 4184 transitions. [2022-11-20 10:57:38,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:38,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-11-20 10:57:38,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:38,464 INFO L225 Difference]: With dead ends: 2686 [2022-11-20 10:57:38,464 INFO L226 Difference]: Without dead ends: 2547 [2022-11-20 10:57:38,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:38,467 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 1487 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:38,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1630 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:38,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2022-11-20 10:57:38,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2545. [2022-11-20 10:57:38,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2543 states have (on average 1.5607550137632717) internal successors, (3969), 2544 states have internal predecessors, (3969), 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) [2022-11-20 10:57:38,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3969 transitions. [2022-11-20 10:57:38,564 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3969 transitions. Word has length 48 [2022-11-20 10:57:38,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:38,565 INFO L495 AbstractCegarLoop]: Abstraction has 2545 states and 3969 transitions. [2022-11-20 10:57:38,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-11-20 10:57:38,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3969 transitions. [2022-11-20 10:57:38,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 10:57:38,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:38,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:38,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:57:38,573 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:38,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:38,574 INFO L85 PathProgramCache]: Analyzing trace with hash 42697894, now seen corresponding path program 1 times [2022-11-20 10:57:38,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:38,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823400810] [2022-11-20 10:57:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:38,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:38,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:38,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823400810] [2022-11-20 10:57:38,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823400810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:38,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:38,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:38,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009474396] [2022-11-20 10:57:38,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:38,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:38,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:38,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:38,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:38,629 INFO L87 Difference]: Start difference. First operand 2545 states and 3969 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-11-20 10:57:38,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:38,737 INFO L93 Difference]: Finished difference Result 3033 states and 4687 transitions. [2022-11-20 10:57:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:38,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-11-20 10:57:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:38,751 INFO L225 Difference]: With dead ends: 3033 [2022-11-20 10:57:38,751 INFO L226 Difference]: Without dead ends: 2773 [2022-11-20 10:57:38,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:38,758 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 1485 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:38,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1632 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2022-11-20 10:57:38,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2771. [2022-11-20 10:57:38,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 2769 states have (on average 1.549656915854099) internal successors, (4291), 2770 states have internal predecessors, (4291), 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) [2022-11-20 10:57:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 4291 transitions. [2022-11-20 10:57:38,891 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 4291 transitions. Word has length 48 [2022-11-20 10:57:38,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:38,891 INFO L495 AbstractCegarLoop]: Abstraction has 2771 states and 4291 transitions. [2022-11-20 10:57:38,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-11-20 10:57:38,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 4291 transitions. [2022-11-20 10:57:38,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 10:57:38,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:38,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:38,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:57:38,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:38,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1823630758, now seen corresponding path program 1 times [2022-11-20 10:57:38,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:38,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692040839] [2022-11-20 10:57:38,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:38,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:38,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:38,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692040839] [2022-11-20 10:57:38,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692040839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:38,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:38,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:38,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587479370] [2022-11-20 10:57:38,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:38,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:38,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:38,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:38,970 INFO L87 Difference]: Start difference. First operand 2771 states and 4291 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-11-20 10:57:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:39,150 INFO L93 Difference]: Finished difference Result 3679 states and 5597 transitions. [2022-11-20 10:57:39,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:39,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-11-20 10:57:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:39,164 INFO L225 Difference]: With dead ends: 3679 [2022-11-20 10:57:39,165 INFO L226 Difference]: Without dead ends: 3193 [2022-11-20 10:57:39,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:39,168 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1483 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:39,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1634 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2022-11-20 10:57:39,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 3191. [2022-11-20 10:57:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3191 states, 3189 states have (on average 1.5274380683599875) internal successors, (4871), 3190 states have internal predecessors, (4871), 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) [2022-11-20 10:57:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 4871 transitions. [2022-11-20 10:57:39,376 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 4871 transitions. Word has length 48 [2022-11-20 10:57:39,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:39,377 INFO L495 AbstractCegarLoop]: Abstraction has 3191 states and 4871 transitions. [2022-11-20 10:57:39,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2022-11-20 10:57:39,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 4871 transitions. [2022-11-20 10:57:39,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 10:57:39,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:39,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:39,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:57:39,379 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:39,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:39,380 INFO L85 PathProgramCache]: Analyzing trace with hash 246335073, now seen corresponding path program 1 times [2022-11-20 10:57:39,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:39,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457392170] [2022-11-20 10:57:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:39,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:39,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:39,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457392170] [2022-11-20 10:57:39,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457392170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:39,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:39,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:39,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599775271] [2022-11-20 10:57:39,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:39,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:39,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:39,451 INFO L87 Difference]: Start difference. First operand 3191 states and 4871 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-20 10:57:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:39,685 INFO L93 Difference]: Finished difference Result 4158 states and 6269 transitions. [2022-11-20 10:57:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:39,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2022-11-20 10:57:39,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:39,701 INFO L225 Difference]: With dead ends: 4158 [2022-11-20 10:57:39,701 INFO L226 Difference]: Without dead ends: 3627 [2022-11-20 10:57:39,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:39,705 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 1486 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:39,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:39,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2022-11-20 10:57:40,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 3625. [2022-11-20 10:57:40,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 3623 states have (on average 1.5106265525807343) internal successors, (5473), 3624 states have internal predecessors, (5473), 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) [2022-11-20 10:57:40,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5473 transitions. [2022-11-20 10:57:40,019 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5473 transitions. Word has length 50 [2022-11-20 10:57:40,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:40,021 INFO L495 AbstractCegarLoop]: Abstraction has 3625 states and 5473 transitions. [2022-11-20 10:57:40,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-20 10:57:40,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5473 transitions. [2022-11-20 10:57:40,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 10:57:40,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:40,023 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, 1, 1, 1, 1] [2022-11-20 10:57:40,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:57:40,024 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:40,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1523853909, now seen corresponding path program 1 times [2022-11-20 10:57:40,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:40,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992180381] [2022-11-20 10:57:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:40,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:57:40,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:40,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992180381] [2022-11-20 10:57:40,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992180381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:40,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:40,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:57:40,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260226832] [2022-11-20 10:57:40,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:40,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:40,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:40,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:40,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:40,190 INFO L87 Difference]: Start difference. First operand 3625 states and 5473 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:41,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:41,203 INFO L93 Difference]: Finished difference Result 9275 states and 13430 transitions. [2022-11-20 10:57:41,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:57:41,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-20 10:57:41,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:41,251 INFO L225 Difference]: With dead ends: 9275 [2022-11-20 10:57:41,251 INFO L226 Difference]: Without dead ends: 7937 [2022-11-20 10:57:41,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:57:41,256 INFO L413 NwaCegarLoop]: 1582 mSDtfsCounter, 4668 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:41,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4668 Valid, 3350 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:57:41,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2022-11-20 10:57:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 4961. [2022-11-20 10:57:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4961 states, 4959 states have (on average 1.4795321637426901) internal successors, (7337), 4960 states have internal predecessors, (7337), 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) [2022-11-20 10:57:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4961 states to 4961 states and 7337 transitions. [2022-11-20 10:57:41,828 INFO L78 Accepts]: Start accepts. Automaton has 4961 states and 7337 transitions. Word has length 65 [2022-11-20 10:57:41,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:41,829 INFO L495 AbstractCegarLoop]: Abstraction has 4961 states and 7337 transitions. [2022-11-20 10:57:41,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:57:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4961 states and 7337 transitions. [2022-11-20 10:57:41,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 10:57:41,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:41,832 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, 1, 1, 1, 1] [2022-11-20 10:57:41,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:57:41,833 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:41,833 INFO L85 PathProgramCache]: Analyzing trace with hash 555644587, now seen corresponding path program 1 times [2022-11-20 10:57:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:41,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249652654] [2022-11-20 10:57:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:41,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:57:41,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:41,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249652654] [2022-11-20 10:57:41,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249652654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:41,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:41,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:57:41,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499537937] [2022-11-20 10:57:41,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:41,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:41,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:41,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:41,991 INFO L87 Difference]: Start difference. First operand 4961 states and 7337 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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) [2022-11-20 10:57:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:43,372 INFO L93 Difference]: Finished difference Result 10611 states and 15294 transitions. [2022-11-20 10:57:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:57:43,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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 65 [2022-11-20 10:57:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:43,395 INFO L225 Difference]: With dead ends: 10611 [2022-11-20 10:57:43,395 INFO L226 Difference]: Without dead ends: 9273 [2022-11-20 10:57:43,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:57:43,407 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 4693 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:43,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4693 Valid, 3303 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:57:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9273 states. [2022-11-20 10:57:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9273 to 6969. [2022-11-20 10:57:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6969 states, 6967 states have (on average 1.451557341753983) internal successors, (10113), 6968 states have internal predecessors, (10113), 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) [2022-11-20 10:57:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6969 states to 6969 states and 10113 transitions. [2022-11-20 10:57:44,364 INFO L78 Accepts]: Start accepts. Automaton has 6969 states and 10113 transitions. Word has length 65 [2022-11-20 10:57:44,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:44,365 INFO L495 AbstractCegarLoop]: Abstraction has 6969 states and 10113 transitions. [2022-11-20 10:57:44,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 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) [2022-11-20 10:57:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 6969 states and 10113 transitions. [2022-11-20 10:57:44,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 10:57:44,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:44,373 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, 1, 1, 1, 1] [2022-11-20 10:57:44,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:57:44,374 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:44,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:44,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1958389845, now seen corresponding path program 1 times [2022-11-20 10:57:44,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:44,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724778673] [2022-11-20 10:57:44,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:44,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 10:57:44,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:44,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724778673] [2022-11-20 10:57:44,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724778673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:44,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:44,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:57:44,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966819527] [2022-11-20 10:57:44,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:44,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:44,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:44,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:44,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:44,557 INFO L87 Difference]: Start difference. First operand 6969 states and 10113 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2022-11-20 10:57:46,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:46,076 INFO L93 Difference]: Finished difference Result 11947 states and 17158 transitions. [2022-11-20 10:57:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:57:46,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 65 [2022-11-20 10:57:46,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:46,101 INFO L225 Difference]: With dead ends: 11947 [2022-11-20 10:57:46,102 INFO L226 Difference]: Without dead ends: 10609 [2022-11-20 10:57:46,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:57:46,108 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 4674 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4674 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:46,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4674 Valid, 3337 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:57:46,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10609 states. [2022-11-20 10:57:46,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10609 to 8305. [2022-11-20 10:57:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8305 states, 8303 states have (on average 1.4424906660243286) internal successors, (11977), 8304 states have internal predecessors, (11977), 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) [2022-11-20 10:57:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8305 states to 8305 states and 11977 transitions. [2022-11-20 10:57:47,017 INFO L78 Accepts]: Start accepts. Automaton has 8305 states and 11977 transitions. Word has length 65 [2022-11-20 10:57:47,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:47,018 INFO L495 AbstractCegarLoop]: Abstraction has 8305 states and 11977 transitions. [2022-11-20 10:57:47,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2022-11-20 10:57:47,019 INFO L276 IsEmpty]: Start isEmpty. Operand 8305 states and 11977 transitions. [2022-11-20 10:57:47,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 10:57:47,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:47,021 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:47,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:57:47,021 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:47,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:47,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1188964029, now seen corresponding path program 1 times [2022-11-20 10:57:47,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:47,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154295495] [2022-11-20 10:57:47,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:47,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:47,158 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:47,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:47,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154295495] [2022-11-20 10:57:47,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154295495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:47,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:47,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:47,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649306859] [2022-11-20 10:57:47,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:47,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:47,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:47,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:47,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:47,162 INFO L87 Difference]: Start difference. First operand 8305 states and 11977 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-11-20 10:57:47,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:47,863 INFO L93 Difference]: Finished difference Result 12647 states and 18118 transitions. [2022-11-20 10:57:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:47,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-11-20 10:57:47,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:47,879 INFO L225 Difference]: With dead ends: 12647 [2022-11-20 10:57:47,880 INFO L226 Difference]: Without dead ends: 6629 [2022-11-20 10:57:47,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:47,889 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 42 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:47,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3073 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:47,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6629 states. [2022-11-20 10:57:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6629 to 6627. [2022-11-20 10:57:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6627 states, 6625 states have (on average 1.4567547169811321) internal successors, (9651), 6626 states have internal predecessors, (9651), 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) [2022-11-20 10:57:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6627 states to 6627 states and 9651 transitions. [2022-11-20 10:57:48,587 INFO L78 Accepts]: Start accepts. Automaton has 6627 states and 9651 transitions. Word has length 67 [2022-11-20 10:57:48,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:48,588 INFO L495 AbstractCegarLoop]: Abstraction has 6627 states and 9651 transitions. [2022-11-20 10:57:48,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-11-20 10:57:48,588 INFO L276 IsEmpty]: Start isEmpty. Operand 6627 states and 9651 transitions. [2022-11-20 10:57:48,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 10:57:48,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:48,590 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, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:48,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:57:48,591 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:48,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:48,592 INFO L85 PathProgramCache]: Analyzing trace with hash -733131994, now seen corresponding path program 1 times [2022-11-20 10:57:48,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:48,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74028444] [2022-11-20 10:57:48,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:48,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:57:48,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:48,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74028444] [2022-11-20 10:57:48,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74028444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:48,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:48,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:57:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213347234] [2022-11-20 10:57:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:48,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:48,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:48,828 INFO L87 Difference]: Start difference. First operand 6627 states and 9651 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2022-11-20 10:57:49,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:49,758 INFO L93 Difference]: Finished difference Result 10477 states and 15096 transitions. [2022-11-20 10:57:49,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:57:49,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 67 [2022-11-20 10:57:49,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:49,780 INFO L225 Difference]: With dead ends: 10477 [2022-11-20 10:57:49,780 INFO L226 Difference]: Without dead ends: 9515 [2022-11-20 10:57:49,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:57:49,786 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 4666 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:49,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4666 Valid, 3404 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:57:49,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9515 states. [2022-11-20 10:57:50,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9515 to 7587. [2022-11-20 10:57:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7587 states, 7585 states have (on average 1.4495715227422545) internal successors, (10995), 7586 states have internal predecessors, (10995), 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) [2022-11-20 10:57:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 10995 transitions. [2022-11-20 10:57:50,531 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 10995 transitions. Word has length 67 [2022-11-20 10:57:50,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:50,532 INFO L495 AbstractCegarLoop]: Abstraction has 7587 states and 10995 transitions. [2022-11-20 10:57:50,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2022-11-20 10:57:50,532 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 10995 transitions. [2022-11-20 10:57:50,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 10:57:50,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:50,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:50,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:57:50,535 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:50,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:50,536 INFO L85 PathProgramCache]: Analyzing trace with hash 548136257, now seen corresponding path program 1 times [2022-11-20 10:57:50,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:50,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173994355] [2022-11-20 10:57:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:50,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:50,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:50,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173994355] [2022-11-20 10:57:50,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173994355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:50,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:50,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:50,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884522304] [2022-11-20 10:57:50,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:50,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:50,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:50,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:50,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:50,632 INFO L87 Difference]: Start difference. First operand 7587 states and 10995 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-11-20 10:57:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:51,070 INFO L93 Difference]: Finished difference Result 10231 states and 14693 transitions. [2022-11-20 10:57:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:51,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2022-11-20 10:57:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:51,081 INFO L225 Difference]: With dead ends: 10231 [2022-11-20 10:57:51,081 INFO L226 Difference]: Without dead ends: 4949 [2022-11-20 10:57:51,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:51,087 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:51,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3058 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:51,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2022-11-20 10:57:51,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4947. [2022-11-20 10:57:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4947 states, 4945 states have (on average 1.4671385237613752) internal successors, (7255), 4946 states have internal predecessors, (7255), 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) [2022-11-20 10:57:51,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 7255 transitions. [2022-11-20 10:57:51,552 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 7255 transitions. Word has length 68 [2022-11-20 10:57:51,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:51,553 INFO L495 AbstractCegarLoop]: Abstraction has 4947 states and 7255 transitions. [2022-11-20 10:57:51,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2022-11-20 10:57:51,553 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 7255 transitions. [2022-11-20 10:57:51,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 10:57:51,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:51,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:51,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:57:51,555 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:51,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1967598547, now seen corresponding path program 1 times [2022-11-20 10:57:51,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:51,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335493032] [2022-11-20 10:57:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:51,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:51,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:51,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335493032] [2022-11-20 10:57:51,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335493032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:51,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:51,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:51,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788997682] [2022-11-20 10:57:51,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:51,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:51,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:51,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:51,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:51,689 INFO L87 Difference]: Start difference. First operand 4947 states and 7255 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2022-11-20 10:57:51,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:51,938 INFO L93 Difference]: Finished difference Result 6271 states and 9083 transitions. [2022-11-20 10:57:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:51,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 70 [2022-11-20 10:57:51,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:51,946 INFO L225 Difference]: With dead ends: 6271 [2022-11-20 10:57:51,946 INFO L226 Difference]: Without dead ends: 3629 [2022-11-20 10:57:51,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:51,951 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 34 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:51,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2022-11-20 10:57:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3627. [2022-11-20 10:57:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3625 states have (on average 1.4915862068965517) internal successors, (5407), 3626 states have internal predecessors, (5407), 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) [2022-11-20 10:57:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 5407 transitions. [2022-11-20 10:57:52,223 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 5407 transitions. Word has length 70 [2022-11-20 10:57:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:52,224 INFO L495 AbstractCegarLoop]: Abstraction has 3627 states and 5407 transitions. [2022-11-20 10:57:52,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2022-11-20 10:57:52,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 5407 transitions. [2022-11-20 10:57:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 10:57:52,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:52,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:52,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:57:52,227 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:52,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:52,228 INFO L85 PathProgramCache]: Analyzing trace with hash -673918747, now seen corresponding path program 1 times [2022-11-20 10:57:52,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:52,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348104332] [2022-11-20 10:57:52,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:52,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:52,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:52,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348104332] [2022-11-20 10:57:52,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348104332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:52,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:52,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:57:52,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744585135] [2022-11-20 10:57:52,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:52,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:57:52,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:52,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:57:52,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:52,339 INFO L87 Difference]: Start difference. First operand 3627 states and 5407 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-11-20 10:57:52,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:52,555 INFO L93 Difference]: Finished difference Result 4291 states and 6311 transitions. [2022-11-20 10:57:52,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:57:52,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-11-20 10:57:52,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:52,564 INFO L225 Difference]: With dead ends: 4291 [2022-11-20 10:57:52,564 INFO L226 Difference]: Without dead ends: 2969 [2022-11-20 10:57:52,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:57:52,567 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 31 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:52,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:52,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2022-11-20 10:57:52,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2967. [2022-11-20 10:57:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2965 states have (on average 1.5156829679595278) internal successors, (4494), 2966 states have internal predecessors, (4494), 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) [2022-11-20 10:57:52,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 4494 transitions. [2022-11-20 10:57:52,802 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 4494 transitions. Word has length 72 [2022-11-20 10:57:52,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:52,803 INFO L495 AbstractCegarLoop]: Abstraction has 2967 states and 4494 transitions. [2022-11-20 10:57:52,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-11-20 10:57:52,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 4494 transitions. [2022-11-20 10:57:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 10:57:52,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:52,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:52,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:57:52,805 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:52,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:52,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1516893303, now seen corresponding path program 1 times [2022-11-20 10:57:52,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:57:52,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173810886] [2022-11-20 10:57:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:52,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:57:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:54,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:57:54,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173810886] [2022-11-20 10:57:54,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173810886] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:57:54,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960531295] [2022-11-20 10:57:54,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:54,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:57:54,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:57:54,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:57:54,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:57:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:54,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 10:57:54,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:57:55,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:57:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:57:55,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960531295] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:57:55,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:57:55,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2022-11-20 10:57:55,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610930242] [2022-11-20 10:57:55,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:57:55,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:57:55,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:57:55,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:57:55,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:57:55,638 INFO L87 Difference]: Start difference. First operand 2967 states and 4494 transitions. Second operand has 19 states, 19 states have (on average 10.789473684210526) internal successors, (205), 19 states have internal predecessors, (205), 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) [2022-11-20 10:58:01,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:01,486 INFO L93 Difference]: Finished difference Result 9702 states and 13279 transitions. [2022-11-20 10:58:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-20 10:58:01,487 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.789473684210526) internal successors, (205), 19 states have internal predecessors, (205), 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 74 [2022-11-20 10:58:01,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:01,507 INFO L225 Difference]: With dead ends: 9702 [2022-11-20 10:58:01,507 INFO L226 Difference]: Without dead ends: 9040 [2022-11-20 10:58:01,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=868, Invalid=4102, Unknown=0, NotChecked=0, Total=4970 [2022-11-20 10:58:01,514 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 14328 mSDsluCounter, 7864 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14328 SdHoareTripleChecker+Valid, 9378 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:01,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14328 Valid, 9378 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:58:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9040 states. [2022-11-20 10:58:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9040 to 7120. [2022-11-20 10:58:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7118 states have (on average 1.3699072773250913) internal successors, (9751), 7119 states have internal predecessors, (9751), 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) [2022-11-20 10:58:02,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 9751 transitions. [2022-11-20 10:58:02,597 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 9751 transitions. Word has length 74 [2022-11-20 10:58:02,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:02,598 INFO L495 AbstractCegarLoop]: Abstraction has 7120 states and 9751 transitions. [2022-11-20 10:58:02,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.789473684210526) internal successors, (205), 19 states have internal predecessors, (205), 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) [2022-11-20 10:58:02,598 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 9751 transitions. [2022-11-20 10:58:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 10:58:02,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:02,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:02,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:02,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:02,800 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:02,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:02,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1010952072, now seen corresponding path program 1 times [2022-11-20 10:58:02,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:02,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724760767] [2022-11-20 10:58:02,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:02,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:03,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:03,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724760767] [2022-11-20 10:58:03,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724760767] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:03,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054875938] [2022-11-20 10:58:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:03,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:03,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:58:03,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:58:03,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:58:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:03,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:58:03,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:04,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:04,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:05,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054875938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:05,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:58:05,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-11-20 10:58:05,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234609271] [2022-11-20 10:58:05,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:05,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 10:58:05,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 10:58:05,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-11-20 10:58:05,034 INFO L87 Difference]: Start difference. First operand 7120 states and 9751 transitions. Second operand has 24 states, 24 states have (on average 7.625) internal successors, (183), 23 states have internal predecessors, (183), 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) [2022-11-20 10:58:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:11,260 INFO L93 Difference]: Finished difference Result 30357 states and 39739 transitions. [2022-11-20 10:58:11,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 10:58:11,261 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.625) internal successors, (183), 23 states have internal predecessors, (183), 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 75 [2022-11-20 10:58:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:11,298 INFO L225 Difference]: With dead ends: 30357 [2022-11-20 10:58:11,298 INFO L226 Difference]: Without dead ends: 25584 [2022-11-20 10:58:11,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=627, Invalid=2343, Unknown=0, NotChecked=0, Total=2970 [2022-11-20 10:58:11,309 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 22997 mSDsluCounter, 6770 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22997 SdHoareTripleChecker+Valid, 8314 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:11,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22997 Valid, 8314 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:58:11,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25584 states. [2022-11-20 10:58:14,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25584 to 19506. [2022-11-20 10:58:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19506 states, 19504 states have (on average 1.2871718621821164) internal successors, (25105), 19505 states have internal predecessors, (25105), 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) [2022-11-20 10:58:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19506 states to 19506 states and 25105 transitions. [2022-11-20 10:58:14,256 INFO L78 Accepts]: Start accepts. Automaton has 19506 states and 25105 transitions. Word has length 75 [2022-11-20 10:58:14,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:14,256 INFO L495 AbstractCegarLoop]: Abstraction has 19506 states and 25105 transitions. [2022-11-20 10:58:14,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.625) internal successors, (183), 23 states have internal predecessors, (183), 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) [2022-11-20 10:58:14,257 INFO L276 IsEmpty]: Start isEmpty. Operand 19506 states and 25105 transitions. [2022-11-20 10:58:14,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 10:58:14,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:14,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:14,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:14,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:14,465 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:14,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:14,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2028388102, now seen corresponding path program 1 times [2022-11-20 10:58:14,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:14,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205586924] [2022-11-20 10:58:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:14,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:14,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:14,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:14,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205586924] [2022-11-20 10:58:14,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205586924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:14,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68004869] [2022-11-20 10:58:14,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:14,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:14,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:58:14,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:58:14,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:58:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:15,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 10:58:15,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:15,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:17,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68004869] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:17,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:58:17,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-11-20 10:58:17,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026116843] [2022-11-20 10:58:17,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:17,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:58:17,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:58:17,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:58:17,084 INFO L87 Difference]: Start difference. First operand 19506 states and 25105 transitions. Second operand has 23 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 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) [2022-11-20 10:58:22,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:22,715 INFO L93 Difference]: Finished difference Result 39101 states and 49046 transitions. [2022-11-20 10:58:22,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:58:22,716 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 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 75 [2022-11-20 10:58:22,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:22,746 INFO L225 Difference]: With dead ends: 39101 [2022-11-20 10:58:22,746 INFO L226 Difference]: Without dead ends: 24800 [2022-11-20 10:58:22,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:58:22,758 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 14145 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14145 SdHoareTripleChecker+Valid, 4813 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:22,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14145 Valid, 4813 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:58:22,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24800 states. [2022-11-20 10:58:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24800 to 18802. [2022-11-20 10:58:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18802 states, 18800 states have (on average 1.2726063829787233) internal successors, (23925), 18801 states have internal predecessors, (23925), 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) [2022-11-20 10:58:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18802 states to 18802 states and 23925 transitions. [2022-11-20 10:58:26,475 INFO L78 Accepts]: Start accepts. Automaton has 18802 states and 23925 transitions. Word has length 75 [2022-11-20 10:58:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:26,476 INFO L495 AbstractCegarLoop]: Abstraction has 18802 states and 23925 transitions. [2022-11-20 10:58:26,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 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) [2022-11-20 10:58:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 18802 states and 23925 transitions. [2022-11-20 10:58:26,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 10:58:26,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:26,479 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:26,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:26,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:26,685 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:26,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:26,685 INFO L85 PathProgramCache]: Analyzing trace with hash -268185879, now seen corresponding path program 1 times [2022-11-20 10:58:26,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:26,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019638885] [2022-11-20 10:58:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:26,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:27,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:27,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019638885] [2022-11-20 10:58:27,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019638885] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:27,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463992124] [2022-11-20 10:58:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:27,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:27,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:58:27,277 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:58:27,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:58:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:27,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:58:27,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:28,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:29,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463992124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:29,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:58:29,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2022-11-20 10:58:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772799081] [2022-11-20 10:58:29,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:29,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 10:58:29,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:29,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 10:58:29,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2022-11-20 10:58:29,951 INFO L87 Difference]: Start difference. First operand 18802 states and 23925 transitions. Second operand has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:42,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:58:42,147 INFO L93 Difference]: Finished difference Result 62273 states and 77223 transitions. [2022-11-20 10:58:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:58:42,148 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-20 10:58:42,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:58:42,204 INFO L225 Difference]: With dead ends: 62273 [2022-11-20 10:58:42,204 INFO L226 Difference]: Without dead ends: 47992 [2022-11-20 10:58:42,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=451, Invalid=1441, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 10:58:42,218 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 13957 mSDsluCounter, 8032 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13957 SdHoareTripleChecker+Valid, 9569 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:58:42,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13957 Valid, 9569 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 10:58:42,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47992 states. [2022-11-20 10:58:50,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47992 to 35338. [2022-11-20 10:58:50,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35338 states, 35336 states have (on average 1.2405195834276659) internal successors, (43835), 35337 states have internal predecessors, (43835), 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) [2022-11-20 10:58:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35338 states to 35338 states and 43835 transitions. [2022-11-20 10:58:50,463 INFO L78 Accepts]: Start accepts. Automaton has 35338 states and 43835 transitions. Word has length 76 [2022-11-20 10:58:50,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:58:50,463 INFO L495 AbstractCegarLoop]: Abstraction has 35338 states and 43835 transitions. [2022-11-20 10:58:50,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:58:50,464 INFO L276 IsEmpty]: Start isEmpty. Operand 35338 states and 43835 transitions. [2022-11-20 10:58:50,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 10:58:50,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:58:50,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:58:50,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:58:50,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:50,673 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:58:50,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:58:50,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1113650506, now seen corresponding path program 1 times [2022-11-20 10:58:50,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:58:50,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346987894] [2022-11-20 10:58:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:50,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:58:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:52,260 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:52,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:58:52,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346987894] [2022-11-20 10:58:52,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346987894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:58:52,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406468680] [2022-11-20 10:58:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:58:52,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:58:52,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:58:52,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:58:52,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:58:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:58:52,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 10:58:52,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:58:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:54,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:58:57,310 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:58:57,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406468680] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:58:57,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:58:57,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 16] total 40 [2022-11-20 10:58:57,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699508748] [2022-11-20 10:58:57,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:58:57,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-20 10:58:57,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:58:57,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-20 10:58:57,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 10:58:57,314 INFO L87 Difference]: Start difference. First operand 35338 states and 43835 transitions. Second operand has 40 states, 40 states have (on average 5.375) internal successors, (215), 40 states have internal predecessors, (215), 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) [2022-11-20 10:59:45,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:59:45,109 INFO L93 Difference]: Finished difference Result 91509 states and 111160 transitions. [2022-11-20 10:59:45,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-11-20 10:59:45,109 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.375) internal successors, (215), 40 states have internal predecessors, (215), 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 77 [2022-11-20 10:59:45,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:59:45,214 INFO L225 Difference]: With dead ends: 91509 [2022-11-20 10:59:45,215 INFO L226 Difference]: Without dead ends: 73999 [2022-11-20 10:59:45,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9568 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=5342, Invalid=20098, Unknown=0, NotChecked=0, Total=25440 [2022-11-20 10:59:45,240 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 20338 mSDsluCounter, 26149 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20338 SdHoareTripleChecker+Valid, 27779 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:59:45,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20338 Valid, 27779 Invalid, 2623 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [152 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 10:59:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73999 states. [2022-11-20 10:59:54,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73999 to 28655. [2022-11-20 10:59:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28655 states, 28653 states have (on average 1.24196419223118) internal successors, (35586), 28654 states have internal predecessors, (35586), 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) [2022-11-20 10:59:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28655 states to 28655 states and 35586 transitions. [2022-11-20 10:59:54,331 INFO L78 Accepts]: Start accepts. Automaton has 28655 states and 35586 transitions. Word has length 77 [2022-11-20 10:59:54,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:59:54,332 INFO L495 AbstractCegarLoop]: Abstraction has 28655 states and 35586 transitions. [2022-11-20 10:59:54,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.375) internal successors, (215), 40 states have internal predecessors, (215), 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) [2022-11-20 10:59:54,332 INFO L276 IsEmpty]: Start isEmpty. Operand 28655 states and 35586 transitions. [2022-11-20 10:59:54,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 10:59:54,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:59:54,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:59:54,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:59:54,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:59:54,534 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:59:54,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:59:54,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1164449718, now seen corresponding path program 1 times [2022-11-20 10:59:54,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:59:54,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312446399] [2022-11-20 10:59:54,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:54,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:59:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:56,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:59:56,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:59:56,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312446399] [2022-11-20 10:59:56,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312446399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:59:56,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915210147] [2022-11-20 10:59:56,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:59:56,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:59:56,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:59:56,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:59:56,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1f2198-9e02-4154-8255-9f470d196f12/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:59:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:59:56,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:59:56,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:59:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:59:57,661 INFO L328 TraceCheckSpWp]: Computing backward predicates...