./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label59.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_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/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_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label59.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/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_4732947d-f055-4124-8467-1c4fc544deb6/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 e95469d39d3368d14177394b02d3829b8d37dd10304149f6e91cf64fc01c6cbc --- 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 12:26:21,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:26:21,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:26:21,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:26:21,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:26:21,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:26:21,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:26:21,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:26:21,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:26:21,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:26:21,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:26:21,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:26:21,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:26:21,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:26:21,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:26:21,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:26:21,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:26:21,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:26:21,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:26:21,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:26:21,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:26:21,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:26:21,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:26:21,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:26:21,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:26:21,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:26:21,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:26:21,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:26:21,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:26:21,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:26:21,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:26:21,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:26:21,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:26:21,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:26:21,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:26:21,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:26:21,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:26:21,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:26:21,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:26:21,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:26:21,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:26:21,987 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:26:22,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:26:22,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:26:22,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:26:22,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:26:22,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:26:22,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:26:22,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:26:22,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:26:22,017 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:26:22,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:26:22,017 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:26:22,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:26:22,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:26:22,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:26:22,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:26:22,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:26:22,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:26:22,019 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:26:22,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:26:22,020 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:26:22,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:26:22,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:26:22,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:26:22,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:26:22,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:26:22,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:26:22,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:26:22,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:26:22,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:26:22,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:26:22,023 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:26:22,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:26:22,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:26:22,023 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_4732947d-f055-4124-8467-1c4fc544deb6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e95469d39d3368d14177394b02d3829b8d37dd10304149f6e91cf64fc01c6cbc [2022-11-20 12:26:22,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:26:22,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:26:22,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:26:22,422 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:26:22,422 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:26:22,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/eca-rers2012/Problem13_label59.c [2022-11-20 12:26:26,230 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:26:27,086 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:26:27,087 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/sv-benchmarks/c/eca-rers2012/Problem13_label59.c [2022-11-20 12:26:27,140 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/data/a0b51e4f6/f41c08ab6e054783bf5015acb64a89db/FLAG47b115671 [2022-11-20 12:26:27,162 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/data/a0b51e4f6/f41c08ab6e054783bf5015acb64a89db [2022-11-20 12:26:27,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:26:27,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:26:27,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:26:27,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:26:27,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:26:27,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:26:27" (1/1) ... [2022-11-20 12:26:27,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c29b723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:27, skipping insertion in model container [2022-11-20 12:26:27,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:26:27" (1/1) ... [2022-11-20 12:26:27,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:26:27,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:26:27,823 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_4732947d-f055-4124-8467-1c4fc544deb6/sv-benchmarks/c/eca-rers2012/Problem13_label59.c[6607,6620] [2022-11-20 12:26:29,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:26:29,362 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:26:29,405 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_4732947d-f055-4124-8467-1c4fc544deb6/sv-benchmarks/c/eca-rers2012/Problem13_label59.c[6607,6620] [2022-11-20 12:26:30,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:26:30,422 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:26:30,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30 WrapperNode [2022-11-20 12:26:30,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:26:30,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:26:30,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:26:30,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:26:30,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30" (1/1) ... [2022-11-20 12:26:30,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30" (1/1) ... [2022-11-20 12:26:31,344 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-20 12:26:31,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:26:31,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:26:31,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:26:31,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:26:31,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30" (1/1) ... [2022-11-20 12:26:31,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30" (1/1) ... [2022-11-20 12:26:31,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30" (1/1) ... [2022-11-20 12:26:31,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30" (1/1) ... [2022-11-20 12:26:31,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30" (1/1) ... [2022-11-20 12:26:31,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30" (1/1) ... [2022-11-20 12:26:32,000 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30" (1/1) ... [2022-11-20 12:26:32,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30" (1/1) ... [2022-11-20 12:26:32,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:26:32,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:26:32,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:26:32,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:26:32,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30" (1/1) ... [2022-11-20 12:26:32,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:26:32,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:32,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:26:32,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:26:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:26:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:26:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:26:32,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:26:32,489 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:26:32,492 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:26:41,156 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:26:41,174 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:26:41,175 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:26:41,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:26:41 BoogieIcfgContainer [2022-11-20 12:26:41,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:26:41,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:26:41,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:26:41,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:26:41,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:26:27" (1/3) ... [2022-11-20 12:26:41,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fd9c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:26:41, skipping insertion in model container [2022-11-20 12:26:41,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:30" (2/3) ... [2022-11-20 12:26:41,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fd9c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:26:41, skipping insertion in model container [2022-11-20 12:26:41,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:26:41" (3/3) ... [2022-11-20 12:26:41,190 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label59.c [2022-11-20 12:26:41,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:26:41,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:26:41,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:26:41,323 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;@48ccf0f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:26:41,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:26:41,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 12:26:41,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:26:41,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:41,347 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 12:26:41,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:26:41,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:41,355 INFO L85 PathProgramCache]: Analyzing trace with hash 291089130, now seen corresponding path program 1 times [2022-11-20 12:26:41,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:41,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925660764] [2022-11-20 12:26:41,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:41,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:41,894 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 12:26:41,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:41,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925660764] [2022-11-20 12:26:41,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925660764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:26:41,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:26:41,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:26:41,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929604816] [2022-11-20 12:26:41,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:26:41,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:26:41,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:41,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:26:41,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:26:41,968 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 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 12:26:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:50,832 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2022-11-20 12:26:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:26:50,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 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 12:26:50,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:50,876 INFO L225 Difference]: With dead ends: 3160 [2022-11-20 12:26:50,880 INFO L226 Difference]: Without dead ends: 1983 [2022-11-20 12:26:50,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:26:50,899 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1057 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:50,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-20 12:26:50,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2022-11-20 12:26:51,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2022-11-20 12:26:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 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 12:26:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2022-11-20 12:26:51,087 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 46 [2022-11-20 12:26:51,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:51,090 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2022-11-20 12:26:51,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 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 12:26:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2022-11-20 12:26:51,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 12:26:51,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:51,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 12:26:51,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:26:51,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:26:51,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:51,106 INFO L85 PathProgramCache]: Analyzing trace with hash -928496590, now seen corresponding path program 1 times [2022-11-20 12:26:51,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:51,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278947769] [2022-11-20 12:26:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:51,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:51,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:51,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:51,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278947769] [2022-11-20 12:26:51,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278947769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:26:51,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:26:51,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:26:51,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167626404] [2022-11-20 12:26:51,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:26:51,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:26:51,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:51,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:26:51,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:26:51,518 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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 12:26:57,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:57,921 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2022-11-20 12:26:57,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:26:57,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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 111 [2022-11-20 12:26:57,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:57,938 INFO L225 Difference]: With dead ends: 5456 [2022-11-20 12:26:57,939 INFO L226 Difference]: Without dead ends: 3528 [2022-11-20 12:26:57,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:26:57,944 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:57,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 12:26:57,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2022-11-20 12:26:58,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2022-11-20 12:26:58,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 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 12:26:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2022-11-20 12:26:58,053 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 111 [2022-11-20 12:26:58,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:58,057 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2022-11-20 12:26:58,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 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 12:26:58,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2022-11-20 12:26:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 12:26:58,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:58,065 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:58,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:26:58,075 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:26:58,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:58,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2127816963, now seen corresponding path program 1 times [2022-11-20 12:26:58,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:58,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362298135] [2022-11-20 12:26:58,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:58,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:58,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:58,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362298135] [2022-11-20 12:26:58,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362298135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:26:58,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:26:58,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:26:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321353434] [2022-11-20 12:26:58,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:26:58,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:26:58,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:26:58,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:26:58,339 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 12:27:04,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:04,483 INFO L93 Difference]: Finished difference Result 10234 states and 16098 transitions. [2022-11-20 12:27:04,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:27:04,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 117 [2022-11-20 12:27:04,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:04,515 INFO L225 Difference]: With dead ends: 10234 [2022-11-20 12:27:04,515 INFO L226 Difference]: Without dead ends: 6710 [2022-11-20 12:27:04,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:27:04,523 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 973 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:04,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 852 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-20 12:27:04,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6710 states. [2022-11-20 12:27:04,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6710 to 6700. [2022-11-20 12:27:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 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 12:27:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2022-11-20 12:27:04,758 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 117 [2022-11-20 12:27:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:04,761 INFO L495 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2022-11-20 12:27:04,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 12:27:04,762 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2022-11-20 12:27:04,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 12:27:04,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:04,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:04,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:27:04,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:04,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1371058456, now seen corresponding path program 1 times [2022-11-20 12:27:04,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:04,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284107143] [2022-11-20 12:27:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:04,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:05,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:05,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284107143] [2022-11-20 12:27:05,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284107143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:05,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:05,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:27:05,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133666955] [2022-11-20 12:27:05,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:05,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:27:05,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:05,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:27:05,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:27:05,180 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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 12:27:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:12,426 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2022-11-20 12:27:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:27:12,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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 147 [2022-11-20 12:27:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:12,477 INFO L225 Difference]: With dead ends: 17443 [2022-11-20 12:27:12,478 INFO L226 Difference]: Without dead ends: 10745 [2022-11-20 12:27:12,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:27:12,491 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:12,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 12:27:12,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2022-11-20 12:27:12,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2022-11-20 12:27:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 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 12:27:12,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2022-11-20 12:27:12,746 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 147 [2022-11-20 12:27:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:12,747 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2022-11-20 12:27:12,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 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 12:27:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2022-11-20 12:27:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-20 12:27:12,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:12,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:12,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:27:12,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:12,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2110509215, now seen corresponding path program 1 times [2022-11-20 12:27:12,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:12,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189609762] [2022-11-20 12:27:12,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:13,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:13,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189609762] [2022-11-20 12:27:13,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189609762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:13,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:13,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:27:13,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242816112] [2022-11-20 12:27:13,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:13,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:27:13,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:13,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:27:13,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:27:13,411 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 12:27:18,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:18,973 INFO L93 Difference]: Finished difference Result 20549 states and 28119 transitions. [2022-11-20 12:27:18,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:27:18,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 157 [2022-11-20 12:27:18,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:19,019 INFO L225 Difference]: With dead ends: 20549 [2022-11-20 12:27:19,020 INFO L226 Difference]: Without dead ends: 10669 [2022-11-20 12:27:19,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:27:19,043 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:19,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1212 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 12:27:19,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2022-11-20 12:27:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 10669. [2022-11-20 12:27:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3539557555305586) internal successors, (14444), 10668 states have internal predecessors, (14444), 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 12:27:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14444 transitions. [2022-11-20 12:27:19,296 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14444 transitions. Word has length 157 [2022-11-20 12:27:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:19,296 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14444 transitions. [2022-11-20 12:27:19,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 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 12:27:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14444 transitions. [2022-11-20 12:27:19,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-20 12:27:19,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:19,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:19,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:27:19,302 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:19,302 INFO L85 PathProgramCache]: Analyzing trace with hash -339079179, now seen corresponding path program 1 times [2022-11-20 12:27:19,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:19,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578701559] [2022-11-20 12:27:19,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:19,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:19,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578701559] [2022-11-20 12:27:19,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578701559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:19,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:19,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:27:19,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698816311] [2022-11-20 12:27:19,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:19,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:27:19,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:19,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:27:19,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:27:19,517 INFO L87 Difference]: Start difference. First operand 10669 states and 14444 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 12:27:25,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:25,624 INFO L93 Difference]: Finished difference Result 29991 states and 41155 transitions. [2022-11-20 12:27:25,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:27:25,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 171 [2022-11-20 12:27:25,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:25,670 INFO L225 Difference]: With dead ends: 29991 [2022-11-20 12:27:25,670 INFO L226 Difference]: Without dead ends: 20111 [2022-11-20 12:27:25,682 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 12:27:25,683 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 891 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:25,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1988 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-20 12:27:25,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20111 states. [2022-11-20 12:27:25,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20111 to 19314. [2022-11-20 12:27:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19314 states, 19313 states have (on average 1.2808470978097655) internal successors, (24737), 19313 states have internal predecessors, (24737), 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 12:27:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19314 states to 19314 states and 24737 transitions. [2022-11-20 12:27:26,052 INFO L78 Accepts]: Start accepts. Automaton has 19314 states and 24737 transitions. Word has length 171 [2022-11-20 12:27:26,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:26,053 INFO L495 AbstractCegarLoop]: Abstraction has 19314 states and 24737 transitions. [2022-11-20 12:27:26,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 12:27:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 19314 states and 24737 transitions. [2022-11-20 12:27:26,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-11-20 12:27:26,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:26,071 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:27:26,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:27:26,071 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:26,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1894492209, now seen corresponding path program 1 times [2022-11-20 12:27:26,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:26,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409495798] [2022-11-20 12:27:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:26,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:26,636 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-20 12:27:26,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:26,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409495798] [2022-11-20 12:27:26,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409495798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:26,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:26,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:27:26,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747277490] [2022-11-20 12:27:26,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:26,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:27:26,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:26,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:27:26,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:27:26,640 INFO L87 Difference]: Start difference. First operand 19314 states and 24737 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 12:27:33,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:33,077 INFO L93 Difference]: Finished difference Result 44944 states and 56956 transitions. [2022-11-20 12:27:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:27:33,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 258 [2022-11-20 12:27:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:33,135 INFO L225 Difference]: With dead ends: 44944 [2022-11-20 12:27:33,135 INFO L226 Difference]: Without dead ends: 25632 [2022-11-20 12:27:33,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:27:33,153 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 728 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:33,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1192 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 12:27:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25632 states. [2022-11-20 12:27:33,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25632 to 25622. [2022-11-20 12:27:33,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25622 states, 25621 states have (on average 1.232621677530151) internal successors, (31581), 25621 states have internal predecessors, (31581), 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 12:27:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25622 states to 25622 states and 31581 transitions. [2022-11-20 12:27:33,579 INFO L78 Accepts]: Start accepts. Automaton has 25622 states and 31581 transitions. Word has length 258 [2022-11-20 12:27:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:33,580 INFO L495 AbstractCegarLoop]: Abstraction has 25622 states and 31581 transitions. [2022-11-20 12:27:33,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 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 12:27:33,580 INFO L276 IsEmpty]: Start isEmpty. Operand 25622 states and 31581 transitions. [2022-11-20 12:27:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-20 12:27:33,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:33,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:33,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:27:33,588 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:33,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:33,589 INFO L85 PathProgramCache]: Analyzing trace with hash -561364737, now seen corresponding path program 1 times [2022-11-20 12:27:33,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:33,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521318410] [2022-11-20 12:27:33,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:33,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:33,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:33,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521318410] [2022-11-20 12:27:33,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521318410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:33,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:33,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:27:33,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579201587] [2022-11-20 12:27:33,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:33,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:27:33,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:33,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:27:33,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:27:33,940 INFO L87 Difference]: Start difference. First operand 25622 states and 31581 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 12:27:40,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:40,376 INFO L93 Difference]: Finished difference Result 72509 states and 89970 transitions. [2022-11-20 12:27:40,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:27:40,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 273 [2022-11-20 12:27:40,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:40,469 INFO L225 Difference]: With dead ends: 72509 [2022-11-20 12:27:40,470 INFO L226 Difference]: Without dead ends: 47676 [2022-11-20 12:27:40,491 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 12:27:40,492 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 827 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:40,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 898 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 12:27:40,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47676 states. [2022-11-20 12:27:41,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47676 to 46091. [2022-11-20 12:27:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46091 states, 46090 states have (on average 1.1851377739205902) internal successors, (54623), 46090 states have internal predecessors, (54623), 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 12:27:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46091 states to 46091 states and 54623 transitions. [2022-11-20 12:27:41,371 INFO L78 Accepts]: Start accepts. Automaton has 46091 states and 54623 transitions. Word has length 273 [2022-11-20 12:27:41,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:41,372 INFO L495 AbstractCegarLoop]: Abstraction has 46091 states and 54623 transitions. [2022-11-20 12:27:41,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 12:27:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 46091 states and 54623 transitions. [2022-11-20 12:27:41,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-11-20 12:27:41,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:41,380 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:41,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:27:41,381 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:41,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:41,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1177672583, now seen corresponding path program 1 times [2022-11-20 12:27:41,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:41,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584477344] [2022-11-20 12:27:41,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:41,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:43,500 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 87 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:43,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:43,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584477344] [2022-11-20 12:27:43,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584477344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:43,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120809440] [2022-11-20 12:27:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:43,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:43,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:43,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:43,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:27:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:43,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:27:43,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:27:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-20 12:27:43,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:27:43,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120809440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:43,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:27:43,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 12:27:43,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523641059] [2022-11-20 12:27:43,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:43,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:27:43,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:43,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:27:43,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:27:43,911 INFO L87 Difference]: Start difference. First operand 46091 states and 54623 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 12:27:49,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:49,542 INFO L93 Difference]: Finished difference Result 91391 states and 108451 transitions. [2022-11-20 12:27:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:27:49,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 287 [2022-11-20 12:27:49,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:49,602 INFO L225 Difference]: With dead ends: 91391 [2022-11-20 12:27:49,602 INFO L226 Difference]: Without dead ends: 46089 [2022-11-20 12:27:49,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:27:49,633 INFO L413 NwaCegarLoop]: 1359 mSDtfsCounter, 1160 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:49,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 1441 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 12:27:49,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46089 states. [2022-11-20 12:27:50,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46089 to 46088. [2022-11-20 12:27:50,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46088 states, 46087 states have (on average 1.150693254062968) internal successors, (53032), 46087 states have internal predecessors, (53032), 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 12:27:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46088 states to 46088 states and 53032 transitions. [2022-11-20 12:27:50,480 INFO L78 Accepts]: Start accepts. Automaton has 46088 states and 53032 transitions. Word has length 287 [2022-11-20 12:27:50,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:50,481 INFO L495 AbstractCegarLoop]: Abstraction has 46088 states and 53032 transitions. [2022-11-20 12:27:50,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 12:27:50,482 INFO L276 IsEmpty]: Start isEmpty. Operand 46088 states and 53032 transitions. [2022-11-20 12:27:50,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-20 12:27:50,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:50,497 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:50,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:27:50,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:50,705 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:50,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:50,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1768426365, now seen corresponding path program 1 times [2022-11-20 12:27:50,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:50,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477889700] [2022-11-20 12:27:50,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:50,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 216 proven. 113 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-20 12:27:53,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:53,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477889700] [2022-11-20 12:27:53,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477889700] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:53,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947143637] [2022-11-20 12:27:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:53,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:53,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:53,520 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:53,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:27:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:53,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:27:53,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:27:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-20 12:27:53,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:27:53,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947143637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:53,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:27:53,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 12:27:53,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148665912] [2022-11-20 12:27:53,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:53,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:27:53,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:53,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:27:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:27:53,909 INFO L87 Difference]: Start difference. First operand 46088 states and 53032 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 12:27:59,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:59,332 INFO L93 Difference]: Finished difference Result 91376 states and 105260 transitions. [2022-11-20 12:27:59,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:27:59,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 352 [2022-11-20 12:27:59,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:59,518 INFO L225 Difference]: With dead ends: 91376 [2022-11-20 12:27:59,518 INFO L226 Difference]: Without dead ends: 46077 [2022-11-20 12:27:59,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:27:59,542 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1075 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:59,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 817 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-20 12:27:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46077 states. [2022-11-20 12:28:00,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46077 to 46074. [2022-11-20 12:28:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46074 states, 46073 states have (on average 1.1090443426735832) internal successors, (51097), 46073 states have internal predecessors, (51097), 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 12:28:00,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46074 states to 46074 states and 51097 transitions. [2022-11-20 12:28:00,457 INFO L78 Accepts]: Start accepts. Automaton has 46074 states and 51097 transitions. Word has length 352 [2022-11-20 12:28:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:00,458 INFO L495 AbstractCegarLoop]: Abstraction has 46074 states and 51097 transitions. [2022-11-20 12:28:00,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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 12:28:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 46074 states and 51097 transitions. [2022-11-20 12:28:00,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-11-20 12:28:00,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:00,479 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:00,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:00,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:28:00,685 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash 143007617, now seen corresponding path program 1 times [2022-11-20 12:28:00,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:00,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231533274] [2022-11-20 12:28:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:00,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:28:01,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:01,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231533274] [2022-11-20 12:28:01,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231533274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:01,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:01,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:28:01,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373770142] [2022-11-20 12:28:01,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:01,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:28:01,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:01,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:28:01,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:28:01,430 INFO L87 Difference]: Start difference. First operand 46074 states and 51097 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 12:28:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:13,755 INFO L93 Difference]: Finished difference Result 122259 states and 136283 transitions. [2022-11-20 12:28:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:28:13,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 394 [2022-11-20 12:28:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:13,832 INFO L225 Difference]: With dead ends: 122259 [2022-11-20 12:28:13,833 INFO L226 Difference]: Without dead ends: 76974 [2022-11-20 12:28:13,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:28:13,853 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1701 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 6751 mSolverCounterSat, 1003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 7754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 6751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:13,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 892 Invalid, 7754 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1003 Valid, 6751 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-11-20 12:28:13,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76974 states. [2022-11-20 12:28:14,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76974 to 57894. [2022-11-20 12:28:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57894 states, 57893 states have (on average 1.1003575561812309) internal successors, (63703), 57893 states have internal predecessors, (63703), 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 12:28:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57894 states to 57894 states and 63703 transitions. [2022-11-20 12:28:14,850 INFO L78 Accepts]: Start accepts. Automaton has 57894 states and 63703 transitions. Word has length 394 [2022-11-20 12:28:14,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:14,850 INFO L495 AbstractCegarLoop]: Abstraction has 57894 states and 63703 transitions. [2022-11-20 12:28:14,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 12:28:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 57894 states and 63703 transitions. [2022-11-20 12:28:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-20 12:28:14,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:14,860 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:14,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:28:14,861 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:14,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:14,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1259811683, now seen corresponding path program 1 times [2022-11-20 12:28:14,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:14,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125249592] [2022-11-20 12:28:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:14,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 315 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-20 12:28:15,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:15,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125249592] [2022-11-20 12:28:15,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125249592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:15,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:15,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:28:15,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046399205] [2022-11-20 12:28:15,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:15,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:28:15,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:15,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:28:15,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:28:15,362 INFO L87 Difference]: Start difference. First operand 57894 states and 63703 transitions. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:22,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:22,337 INFO L93 Difference]: Finished difference Result 139407 states and 154440 transitions. [2022-11-20 12:28:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:28:22,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 407 [2022-11-20 12:28:22,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:22,429 INFO L225 Difference]: With dead ends: 139407 [2022-11-20 12:28:22,429 INFO L226 Difference]: Without dead ends: 82302 [2022-11-20 12:28:22,452 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 12:28:22,453 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 831 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 963 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:22,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 833 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 12:28:22,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82302 states. [2022-11-20 12:28:23,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82302 to 80710. [2022-11-20 12:28:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80710 states, 80709 states have (on average 1.1005959682315478) internal successors, (88828), 80709 states have internal predecessors, (88828), 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 12:28:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80710 states to 80710 states and 88828 transitions. [2022-11-20 12:28:23,674 INFO L78 Accepts]: Start accepts. Automaton has 80710 states and 88828 transitions. Word has length 407 [2022-11-20 12:28:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:23,677 INFO L495 AbstractCegarLoop]: Abstraction has 80710 states and 88828 transitions. [2022-11-20 12:28:23,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:28:23,677 INFO L276 IsEmpty]: Start isEmpty. Operand 80710 states and 88828 transitions. [2022-11-20 12:28:23,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-11-20 12:28:23,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:23,715 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:23,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:28:23,716 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:23,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1404182117, now seen corresponding path program 1 times [2022-11-20 12:28:23,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:23,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987666872] [2022-11-20 12:28:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:23,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 369 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-20 12:28:24,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:24,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987666872] [2022-11-20 12:28:24,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987666872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:24,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:24,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:28:24,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693643979] [2022-11-20 12:28:24,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:24,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:28:24,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:24,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:28:24,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:28:24,480 INFO L87 Difference]: Start difference. First operand 80710 states and 88828 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 12:28:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:30,828 INFO L93 Difference]: Finished difference Result 182696 states and 200598 transitions. [2022-11-20 12:28:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:28:30,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 427 [2022-11-20 12:28:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:30,944 INFO L225 Difference]: With dead ends: 182696 [2022-11-20 12:28:30,944 INFO L226 Difference]: Without dead ends: 102775 [2022-11-20 12:28:30,976 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 12:28:30,977 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 804 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:30,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 1114 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 12:28:31,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102775 states. [2022-11-20 12:28:32,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102775 to 98815. [2022-11-20 12:28:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98815 states, 98814 states have (on average 1.0907260104843444) internal successors, (107779), 98814 states have internal predecessors, (107779), 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 12:28:32,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98815 states to 98815 states and 107779 transitions. [2022-11-20 12:28:32,511 INFO L78 Accepts]: Start accepts. Automaton has 98815 states and 107779 transitions. Word has length 427 [2022-11-20 12:28:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:32,512 INFO L495 AbstractCegarLoop]: Abstraction has 98815 states and 107779 transitions. [2022-11-20 12:28:32,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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 12:28:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand 98815 states and 107779 transitions. [2022-11-20 12:28:32,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-20 12:28:32,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:32,519 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-20 12:28:32,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:28:32,519 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:32,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:32,520 INFO L85 PathProgramCache]: Analyzing trace with hash -625667605, now seen corresponding path program 1 times [2022-11-20 12:28:32,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:32,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627578196] [2022-11-20 12:28:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:32,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 385 proven. 113 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-20 12:28:35,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:35,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627578196] [2022-11-20 12:28:35,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627578196] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:35,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144428856] [2022-11-20 12:28:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:35,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:35,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:35,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:35,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:28:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:35,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:28:35,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-11-20 12:28:35,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:28:35,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144428856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:35,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:28:35,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 12:28:35,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600829767] [2022-11-20 12:28:35,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:35,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:28:35,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:35,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:28:35,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:28:35,827 INFO L87 Difference]: Start difference. First operand 98815 states and 107779 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 12:28:41,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:41,943 INFO L93 Difference]: Finished difference Result 198419 states and 216356 transitions. [2022-11-20 12:28:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:28:41,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 437 [2022-11-20 12:28:41,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:42,071 INFO L225 Difference]: With dead ends: 198419 [2022-11-20 12:28:42,071 INFO L226 Difference]: Without dead ends: 100393 [2022-11-20 12:28:42,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:28:42,107 INFO L413 NwaCegarLoop]: 1385 mSDtfsCounter, 993 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:42,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1471 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 12:28:42,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100393 states. [2022-11-20 12:28:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100393 to 98807. [2022-11-20 12:28:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98807 states, 98806 states have (on average 1.067111309029816) internal successors, (105437), 98806 states have internal predecessors, (105437), 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 12:28:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98807 states to 98807 states and 105437 transitions. [2022-11-20 12:28:43,703 INFO L78 Accepts]: Start accepts. Automaton has 98807 states and 105437 transitions. Word has length 437 [2022-11-20 12:28:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:43,704 INFO L495 AbstractCegarLoop]: Abstraction has 98807 states and 105437 transitions. [2022-11-20 12:28:43,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 12:28:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 98807 states and 105437 transitions. [2022-11-20 12:28:43,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-20 12:28:43,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:43,713 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:43,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:43,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:43,914 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:43,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:43,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1887672211, now seen corresponding path program 1 times [2022-11-20 12:28:43,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:43,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569644493] [2022-11-20 12:28:43,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:43,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-20 12:28:44,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:44,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569644493] [2022-11-20 12:28:44,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569644493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:44,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:28:44,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:28:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243591749] [2022-11-20 12:28:44,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:44,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:28:44,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:44,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:28:44,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:28:44,483 INFO L87 Difference]: Start difference. First operand 98807 states and 105437 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 12:28:52,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:52,564 INFO L93 Difference]: Finished difference Result 241040 states and 257884 transitions. [2022-11-20 12:28:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:28:52,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 477 [2022-11-20 12:28:52,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:52,744 INFO L225 Difference]: With dead ends: 241040 [2022-11-20 12:28:52,744 INFO L226 Difference]: Without dead ends: 143022 [2022-11-20 12:28:52,800 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 12:28:52,801 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 845 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2970 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 3580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 2970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:52,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 752 Invalid, 3580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2970 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 12:28:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143022 states. [2022-11-20 12:28:54,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143022 to 118493. [2022-11-20 12:28:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118493 states, 118492 states have (on average 1.0664686223542517) internal successors, (126368), 118492 states have internal predecessors, (126368), 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 12:28:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118493 states to 118493 states and 126368 transitions. [2022-11-20 12:28:54,779 INFO L78 Accepts]: Start accepts. Automaton has 118493 states and 126368 transitions. Word has length 477 [2022-11-20 12:28:54,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:54,779 INFO L495 AbstractCegarLoop]: Abstraction has 118493 states and 126368 transitions. [2022-11-20 12:28:54,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 12:28:54,780 INFO L276 IsEmpty]: Start isEmpty. Operand 118493 states and 126368 transitions. [2022-11-20 12:28:54,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-11-20 12:28:54,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:54,790 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:54,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:28:54,791 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:54,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:54,792 INFO L85 PathProgramCache]: Analyzing trace with hash -647290550, now seen corresponding path program 1 times [2022-11-20 12:28:54,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:54,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028650484] [2022-11-20 12:28:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:54,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 540 proven. 113 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-11-20 12:28:57,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:57,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028650484] [2022-11-20 12:28:57,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028650484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:57,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524377448] [2022-11-20 12:28:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:57,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:57,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:57,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:57,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:28:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:58,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:28:58,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 628 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-20 12:28:58,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:28:58,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524377448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:28:58,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:28:58,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-20 12:28:58,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200581832] [2022-11-20 12:28:58,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:28:58,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:28:58,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:58,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:28:58,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:28:58,679 INFO L87 Difference]: Start difference. First operand 118493 states and 126368 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 12:29:05,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:05,116 INFO L93 Difference]: Finished difference Result 230661 states and 246978 transitions. [2022-11-20 12:29:05,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:29:05,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 518 [2022-11-20 12:29:05,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:05,306 INFO L225 Difference]: With dead ends: 230661 [2022-11-20 12:29:05,306 INFO L226 Difference]: Without dead ends: 128703 [2022-11-20 12:29:05,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:29:05,357 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1201 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:05,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 390 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 12:29:05,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128703 states. [2022-11-20 12:29:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128703 to 128703. [2022-11-20 12:29:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128703 states, 128702 states have (on average 1.0603331727556682) internal successors, (136467), 128702 states have internal predecessors, (136467), 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 12:29:07,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128703 states to 128703 states and 136467 transitions. [2022-11-20 12:29:07,080 INFO L78 Accepts]: Start accepts. Automaton has 128703 states and 136467 transitions. Word has length 518 [2022-11-20 12:29:07,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:07,081 INFO L495 AbstractCegarLoop]: Abstraction has 128703 states and 136467 transitions. [2022-11-20 12:29:07,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 12:29:07,082 INFO L276 IsEmpty]: Start isEmpty. Operand 128703 states and 136467 transitions. [2022-11-20 12:29:07,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-11-20 12:29:07,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:07,646 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:07,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:29:07,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:29:07,853 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:07,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:07,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2103393123, now seen corresponding path program 1 times [2022-11-20 12:29:07,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:07,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115991652] [2022-11-20 12:29:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:07,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 328 proven. 110 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-20 12:29:09,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:09,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115991652] [2022-11-20 12:29:09,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115991652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:29:09,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838723909] [2022-11-20 12:29:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:09,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:29:09,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:29:09,592 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:29:09,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:29:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:09,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:29:09,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:29:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-11-20 12:29:10,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:29:10,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838723909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:10,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:29:10,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-20 12:29:10,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405878379] [2022-11-20 12:29:10,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:10,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:29:10,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:29:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:29:10,029 INFO L87 Difference]: Start difference. First operand 128703 states and 136467 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 12:29:17,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:17,318 INFO L93 Difference]: Finished difference Result 280220 states and 298586 transitions. [2022-11-20 12:29:17,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:29:17,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 542 [2022-11-20 12:29:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:17,521 INFO L225 Difference]: With dead ends: 280220 [2022-11-20 12:29:17,521 INFO L226 Difference]: Without dead ends: 168052 [2022-11-20 12:29:17,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:29:17,577 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 846 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 3281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:17,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 1692 Invalid, 3281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 12:29:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168052 states. [2022-11-20 12:29:19,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168052 to 168052. [2022-11-20 12:29:20,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168052 states, 168051 states have (on average 1.0585119993335357) internal successors, (177884), 168051 states have internal predecessors, (177884), 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 12:29:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168052 states to 168052 states and 177884 transitions. [2022-11-20 12:29:20,737 INFO L78 Accepts]: Start accepts. Automaton has 168052 states and 177884 transitions. Word has length 542 [2022-11-20 12:29:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:20,759 INFO L495 AbstractCegarLoop]: Abstraction has 168052 states and 177884 transitions. [2022-11-20 12:29:20,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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 12:29:20,760 INFO L276 IsEmpty]: Start isEmpty. Operand 168052 states and 177884 transitions. [2022-11-20 12:29:20,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2022-11-20 12:29:20,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:20,813 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:20,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:29:21,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4732947d-f055-4124-8467-1c4fc544deb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:29:21,015 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:21,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:21,015 INFO L85 PathProgramCache]: Analyzing trace with hash -216386824, now seen corresponding path program 1 times [2022-11-20 12:29:21,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:21,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584373595] [2022-11-20 12:29:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:21,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-20 12:29:21,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:21,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584373595] [2022-11-20 12:29:21,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584373595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:29:21,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:29:21,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:29:21,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24430011] [2022-11-20 12:29:21,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:29:21,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:29:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:21,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:29:21,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:29:21,488 INFO L87 Difference]: Start difference. First operand 168052 states and 177884 transitions. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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 12:29:28,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:28,998 INFO L93 Difference]: Finished difference Result 366804 states and 389131 transitions. [2022-11-20 12:29:28,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:29:28,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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 548 [2022-11-20 12:29:29,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:29,306 INFO L225 Difference]: With dead ends: 366804 [2022-11-20 12:29:29,307 INFO L226 Difference]: Without dead ends: 199541