./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro --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 fede3a1c55393acd487bbed2de4254313cf50e8da830e08a05b90151eebe83c7 --- 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-8393723 [2022-11-18 18:44:21,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:44:21,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:44:21,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:44:21,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:44:21,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:44:21,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:44:21,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:44:21,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:44:21,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:44:21,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:44:21,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:44:21,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:44:21,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:44:21,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:44:21,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:44:21,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:44:21,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:44:21,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:44:21,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:44:21,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:44:21,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:44:21,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:44:21,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:44:21,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:44:21,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:44:21,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:44:21,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:44:21,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:44:21,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:44:21,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:44:21,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:44:21,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:44:21,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:44:21,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:44:21,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:44:21,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:44:21,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:44:21,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:44:21,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:44:21,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:44:21,198 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:44:21,240 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:44:21,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:44:21,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:44:21,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:44:21,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:44:21,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:44:21,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:44:21,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:44:21,245 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:44:21,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:44:21,246 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:44:21,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:44:21,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:44:21,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:44:21,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:44:21,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:44:21,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:44:21,249 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:44:21,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:44:21,249 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:44:21,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:44:21,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:44:21,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:44:21,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:44:21,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:44:21,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:44:21,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:44:21,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:44:21,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:44:21,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:44:21,253 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:44:21,253 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:44:21,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:44:21,254 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_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fede3a1c55393acd487bbed2de4254313cf50e8da830e08a05b90151eebe83c7 [2022-11-18 18:44:21,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:44:21,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:44:21,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:44:21,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:44:21,629 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:44:21,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/eca-rers2012/Problem19_label02.c [2022-11-18 18:44:21,712 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/data/82c8e0a67/2846798179ab4227b85822ee8d77ecdc/FLAGfefc51150 [2022-11-18 18:44:22,834 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:44:22,835 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/sv-benchmarks/c/eca-rers2012/Problem19_label02.c [2022-11-18 18:44:22,889 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/data/82c8e0a67/2846798179ab4227b85822ee8d77ecdc/FLAGfefc51150 [2022-11-18 18:44:23,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/data/82c8e0a67/2846798179ab4227b85822ee8d77ecdc [2022-11-18 18:44:23,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:44:23,114 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:44:23,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:44:23,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:44:23,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:44:23,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:44:23" (1/1) ... [2022-11-18 18:44:23,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f14cee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:23, skipping insertion in model container [2022-11-18 18:44:23,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:44:23" (1/1) ... [2022-11-18 18:44:23,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:44:23,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:44:23,966 WARN L234 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_0371e969-7d6d-48e0-ae07-9c107d35b68a/sv-benchmarks/c/eca-rers2012/Problem19_label02.c[8512,8525] [2022-11-18 18:44:26,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:44:26,075 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:44:26,125 WARN L234 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_0371e969-7d6d-48e0-ae07-9c107d35b68a/sv-benchmarks/c/eca-rers2012/Problem19_label02.c[8512,8525] [2022-11-18 18:44:27,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:44:27,468 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:44:27,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27 WrapperNode [2022-11-18 18:44:27,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:44:27,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:44:27,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:44:27,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:44:27,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27" (1/1) ... [2022-11-18 18:44:27,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27" (1/1) ... [2022-11-18 18:44:28,697 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-11-18 18:44:28,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:44:28,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:44:28,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:44:28,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:44:28,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27" (1/1) ... [2022-11-18 18:44:28,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27" (1/1) ... [2022-11-18 18:44:29,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27" (1/1) ... [2022-11-18 18:44:29,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27" (1/1) ... [2022-11-18 18:44:29,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27" (1/1) ... [2022-11-18 18:44:29,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27" (1/1) ... [2022-11-18 18:44:29,985 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27" (1/1) ... [2022-11-18 18:44:30,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27" (1/1) ... [2022-11-18 18:44:30,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:44:30,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:44:30,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:44:30,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:44:30,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27" (1/1) ... [2022-11-18 18:44:30,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:44:30,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:30,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:30,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:44:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:44:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:44:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:44:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:44:30,462 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:44:30,465 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:44:42,708 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:44:42,739 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:44:42,739 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:44:42,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:44:42 BoogieIcfgContainer [2022-11-18 18:44:42,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:44:42,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:44:42,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:44:42,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:44:42,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:44:23" (1/3) ... [2022-11-18 18:44:42,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee044d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:44:42, skipping insertion in model container [2022-11-18 18:44:42,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:27" (2/3) ... [2022-11-18 18:44:42,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee044d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:44:42, skipping insertion in model container [2022-11-18 18:44:42,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:44:42" (3/3) ... [2022-11-18 18:44:42,759 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label02.c [2022-11-18 18:44:42,787 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:44:42,787 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:44:42,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:44:42,934 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;@436d10dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:44:42,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:44:42,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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) [2022-11-18 18:44:42,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 18:44:42,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:44:42,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:42,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:44:42,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:42,981 INFO L85 PathProgramCache]: Analyzing trace with hash -215114758, now seen corresponding path program 1 times [2022-11-18 18:44:42,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:42,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140591617] [2022-11-18 18:44:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:42,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:44:43,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:43,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140591617] [2022-11-18 18:44:43,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140591617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:43,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:43,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:44:43,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246547518] [2022-11-18 18:44:43,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:43,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:44:43,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:43,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:44:43,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:44:43,851 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:45:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:45:05,235 INFO L93 Difference]: Finished difference Result 6284 states and 12039 transitions. [2022-11-18 18:45:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:45:05,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-18 18:45:05,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:45:05,277 INFO L225 Difference]: With dead ends: 6284 [2022-11-18 18:45:05,277 INFO L226 Difference]: Without dead ends: 4467 [2022-11-18 18:45:05,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:45:05,291 INFO L413 NwaCegarLoop]: 1812 mSDtfsCounter, 4209 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 10828 mSolverCounterSat, 2355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4209 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 13183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2355 IncrementalHoareTripleChecker+Valid, 10828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:45:05,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4209 Valid, 2090 Invalid, 13183 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2355 Valid, 10828 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2022-11-18 18:45:05,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2022-11-18 18:45:05,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4465. [2022-11-18 18:45:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4465 states, 4464 states have (on average 1.564516129032258) internal successors, (6984), 4464 states have internal predecessors, (6984), 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) [2022-11-18 18:45:05,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 6984 transitions. [2022-11-18 18:45:05,489 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 6984 transitions. Word has length 66 [2022-11-18 18:45:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:45:05,491 INFO L495 AbstractCegarLoop]: Abstraction has 4465 states and 6984 transitions. [2022-11-18 18:45:05,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:45:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 6984 transitions. [2022-11-18 18:45:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-18 18:45:05,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:45:05,512 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:05,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:45:05,513 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:45:05,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:05,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1083783417, now seen corresponding path program 1 times [2022-11-18 18:45:05,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:05,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722913911] [2022-11-18 18:45:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:05,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:45:07,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:07,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722913911] [2022-11-18 18:45:07,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722913911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:07,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:07,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:45:07,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962315106] [2022-11-18 18:45:07,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:07,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:45:07,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:45:07,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:45:07,021 INFO L87 Difference]: Start difference. First operand 4465 states and 6984 transitions. Second operand has 4 states, 4 states have (on average 68.25) 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) [2022-11-18 18:45:23,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:45:23,921 INFO L93 Difference]: Finished difference Result 11708 states and 20176 transitions. [2022-11-18 18:45:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:45:23,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.25) 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 [2022-11-18 18:45:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:45:23,957 INFO L225 Difference]: With dead ends: 11708 [2022-11-18 18:45:23,957 INFO L226 Difference]: Without dead ends: 8610 [2022-11-18 18:45:23,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:45:23,965 INFO L413 NwaCegarLoop]: 1804 mSDtfsCounter, 3758 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 9457 mSolverCounterSat, 1336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3758 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 10793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1336 IncrementalHoareTripleChecker+Valid, 9457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:45:23,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3758 Valid, 2159 Invalid, 10793 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1336 Valid, 9457 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2022-11-18 18:45:23,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2022-11-18 18:45:24,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 8594. [2022-11-18 18:45:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8594 states, 8593 states have (on average 1.3481903875247294) internal successors, (11585), 8593 states have internal predecessors, (11585), 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) [2022-11-18 18:45:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 11585 transitions. [2022-11-18 18:45:24,172 INFO L78 Accepts]: Start accepts. Automaton has 8594 states and 11585 transitions. Word has length 273 [2022-11-18 18:45:24,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:45:24,182 INFO L495 AbstractCegarLoop]: Abstraction has 8594 states and 11585 transitions. [2022-11-18 18:45:24,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) 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) [2022-11-18 18:45:24,182 INFO L276 IsEmpty]: Start isEmpty. Operand 8594 states and 11585 transitions. [2022-11-18 18:45:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-18 18:45:24,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:45:24,192 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:24,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:45:24,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:45:24,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:24,209 INFO L85 PathProgramCache]: Analyzing trace with hash -379973805, now seen corresponding path program 1 times [2022-11-18 18:45:24,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:24,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920363586] [2022-11-18 18:45:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:24,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:45:25,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:25,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920363586] [2022-11-18 18:45:25,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920363586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:25,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:25,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:45:25,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194078439] [2022-11-18 18:45:25,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:25,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:45:25,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:25,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:45:25,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:45:25,186 INFO L87 Difference]: Start difference. First operand 8594 states and 11585 transitions. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 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) [2022-11-18 18:45:35,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:45:35,316 INFO L93 Difference]: Finished difference Result 14487 states and 20451 transitions. [2022-11-18 18:45:35,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:45:35,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 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 301 [2022-11-18 18:45:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:45:35,354 INFO L225 Difference]: With dead ends: 14487 [2022-11-18 18:45:35,354 INFO L226 Difference]: Without dead ends: 8594 [2022-11-18 18:45:35,363 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 [2022-11-18 18:45:35,365 INFO L413 NwaCegarLoop]: 1775 mSDtfsCounter, 1153 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5715 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 5723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:45:35,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1153 Valid, 1954 Invalid, 5723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5715 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-11-18 18:45:35,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8594 states. [2022-11-18 18:45:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 8594. [2022-11-18 18:45:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8594 states, 8593 states have (on average 1.3466775282206447) internal successors, (11572), 8593 states have internal predecessors, (11572), 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) [2022-11-18 18:45:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 11572 transitions. [2022-11-18 18:45:35,621 INFO L78 Accepts]: Start accepts. Automaton has 8594 states and 11572 transitions. Word has length 301 [2022-11-18 18:45:35,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:45:35,622 INFO L495 AbstractCegarLoop]: Abstraction has 8594 states and 11572 transitions. [2022-11-18 18:45:35,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 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) [2022-11-18 18:45:35,623 INFO L276 IsEmpty]: Start isEmpty. Operand 8594 states and 11572 transitions. [2022-11-18 18:45:35,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-11-18 18:45:35,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:45:35,646 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:35,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:45:35,648 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:45:35,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:35,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1045523512, now seen corresponding path program 1 times [2022-11-18 18:45:35,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:35,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112004524] [2022-11-18 18:45:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:35,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-18 18:45:36,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:36,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112004524] [2022-11-18 18:45:36,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112004524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:36,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:36,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:45:36,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704875912] [2022-11-18 18:45:36,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:36,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:45:36,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:36,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:45:36,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:45:36,830 INFO L87 Difference]: Start difference. First operand 8594 states and 11572 transitions. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 2 states have internal predecessors, (555), 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) [2022-11-18 18:45:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:45:46,260 INFO L93 Difference]: Finished difference Result 20123 states and 28984 transitions. [2022-11-18 18:45:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:45:46,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 2 states have internal predecessors, (555), 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 622 [2022-11-18 18:45:46,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:45:46,327 INFO L225 Difference]: With dead ends: 20123 [2022-11-18 18:45:46,328 INFO L226 Difference]: Without dead ends: 14261 [2022-11-18 18:45:46,337 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 [2022-11-18 18:45:46,339 INFO L413 NwaCegarLoop]: 1338 mSDtfsCounter, 1356 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 4196 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 5626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:45:46,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 1610 Invalid, 5626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4196 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-18 18:45:46,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14261 states. [2022-11-18 18:45:46,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 14244. [2022-11-18 18:45:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14244 states, 14243 states have (on average 1.2723443094853613) internal successors, (18122), 14243 states have internal predecessors, (18122), 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) [2022-11-18 18:45:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14244 states to 14244 states and 18122 transitions. [2022-11-18 18:45:46,749 INFO L78 Accepts]: Start accepts. Automaton has 14244 states and 18122 transitions. Word has length 622 [2022-11-18 18:45:46,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:45:46,751 INFO L495 AbstractCegarLoop]: Abstraction has 14244 states and 18122 transitions. [2022-11-18 18:45:46,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 2 states have internal predecessors, (555), 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) [2022-11-18 18:45:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 14244 states and 18122 transitions. [2022-11-18 18:45:46,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2022-11-18 18:45:46,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:45:46,774 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:46,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:45:46,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:45:46,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:46,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2120431175, now seen corresponding path program 1 times [2022-11-18 18:45:46,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:46,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111721798] [2022-11-18 18:45:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:46,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-18 18:45:47,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:47,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111721798] [2022-11-18 18:45:47,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111721798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:47,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:47,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:45:47,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452108052] [2022-11-18 18:45:47,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:47,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:45:47,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:47,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:45:47,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:45:47,484 INFO L87 Difference]: Start difference. First operand 14244 states and 18122 transitions. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 2 states have internal predecessors, (555), 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) [2022-11-18 18:45:56,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:45:56,468 INFO L93 Difference]: Finished difference Result 28511 states and 37633 transitions. [2022-11-18 18:45:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:45:56,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 2 states have internal predecessors, (555), 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 627 [2022-11-18 18:45:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:45:56,515 INFO L225 Difference]: With dead ends: 28511 [2022-11-18 18:45:56,515 INFO L226 Difference]: Without dead ends: 16999 [2022-11-18 18:45:56,530 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 [2022-11-18 18:45:56,531 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1387 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 2123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2123 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:45:56,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 757 Invalid, 6050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2123 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-18 18:45:56,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16999 states. [2022-11-18 18:45:56,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16999 to 16985. [2022-11-18 18:45:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16985 states, 16984 states have (on average 1.270843146490815) internal successors, (21584), 16984 states have internal predecessors, (21584), 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) [2022-11-18 18:45:56,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16985 states to 16985 states and 21584 transitions. [2022-11-18 18:45:56,954 INFO L78 Accepts]: Start accepts. Automaton has 16985 states and 21584 transitions. Word has length 627 [2022-11-18 18:45:56,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:45:56,957 INFO L495 AbstractCegarLoop]: Abstraction has 16985 states and 21584 transitions. [2022-11-18 18:45:56,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 2 states have internal predecessors, (555), 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) [2022-11-18 18:45:56,963 INFO L276 IsEmpty]: Start isEmpty. Operand 16985 states and 21584 transitions. [2022-11-18 18:45:56,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2022-11-18 18:45:56,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:45:56,986 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:56,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:45:56,989 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:45:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:56,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1011897308, now seen corresponding path program 1 times [2022-11-18 18:45:56,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:56,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523860448] [2022-11-18 18:45:56,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:56,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-18 18:45:57,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:57,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523860448] [2022-11-18 18:45:57,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523860448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:57,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:57,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:45:57,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863085911] [2022-11-18 18:45:57,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:57,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:45:57,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:57,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:45:57,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:45:57,714 INFO L87 Difference]: Start difference. First operand 16985 states and 21584 transitions. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 2 states have internal predecessors, (555), 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) [2022-11-18 18:46:08,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:46:08,412 INFO L93 Difference]: Finished difference Result 43710 states and 57270 transitions. [2022-11-18 18:46:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:46:08,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 2 states have internal predecessors, (555), 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 630 [2022-11-18 18:46:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:46:08,490 INFO L225 Difference]: With dead ends: 43710 [2022-11-18 18:46:08,490 INFO L226 Difference]: Without dead ends: 29457 [2022-11-18 18:46:08,514 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 [2022-11-18 18:46:08,516 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 2112 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 5114 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 5548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:46:08,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 985 Invalid, 5548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5114 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-11-18 18:46:08,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29457 states. [2022-11-18 18:46:08,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29457 to 29454. [2022-11-18 18:46:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29454 states, 29453 states have (on average 1.2556955148881268) internal successors, (36984), 29453 states have internal predecessors, (36984), 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) [2022-11-18 18:46:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29454 states to 29454 states and 36984 transitions. [2022-11-18 18:46:08,988 INFO L78 Accepts]: Start accepts. Automaton has 29454 states and 36984 transitions. Word has length 630 [2022-11-18 18:46:08,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:46:08,990 INFO L495 AbstractCegarLoop]: Abstraction has 29454 states and 36984 transitions. [2022-11-18 18:46:08,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 2 states have internal predecessors, (555), 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) [2022-11-18 18:46:08,990 INFO L276 IsEmpty]: Start isEmpty. Operand 29454 states and 36984 transitions. [2022-11-18 18:46:08,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2022-11-18 18:46:08,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:46:08,998 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:08,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:46:08,999 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:46:08,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:08,999 INFO L85 PathProgramCache]: Analyzing trace with hash -107422752, now seen corresponding path program 1 times [2022-11-18 18:46:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:09,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423808486] [2022-11-18 18:46:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:09,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:46:10,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:10,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423808486] [2022-11-18 18:46:10,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423808486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:46:10,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:46:10,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:46:10,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133881602] [2022-11-18 18:46:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:46:10,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:46:10,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:10,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:46:10,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:46:10,606 INFO L87 Difference]: Start difference. First operand 29454 states and 36984 transitions. Second operand has 5 states, 5 states have (on average 131.4) internal successors, (657), 4 states have internal predecessors, (657), 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) [2022-11-18 18:46:26,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:46:26,693 INFO L93 Difference]: Finished difference Result 63037 states and 78529 transitions. [2022-11-18 18:46:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:46:26,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 131.4) internal successors, (657), 4 states have internal predecessors, (657), 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 657 [2022-11-18 18:46:26,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:46:26,754 INFO L225 Difference]: With dead ends: 63037 [2022-11-18 18:46:26,754 INFO L226 Difference]: Without dead ends: 36289 [2022-11-18 18:46:26,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:46:26,785 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 2175 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 13132 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2175 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 13320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 13132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:46:26,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2175 Valid, 2184 Invalid, 13320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [188 Valid, 13132 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2022-11-18 18:46:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36289 states. [2022-11-18 18:46:27,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36289 to 34921. [2022-11-18 18:46:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34921 states, 34920 states have (on average 1.2224513172966782) internal successors, (42688), 34920 states have internal predecessors, (42688), 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) [2022-11-18 18:46:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34921 states to 34921 states and 42688 transitions. [2022-11-18 18:46:27,325 INFO L78 Accepts]: Start accepts. Automaton has 34921 states and 42688 transitions. Word has length 657 [2022-11-18 18:46:27,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:46:27,327 INFO L495 AbstractCegarLoop]: Abstraction has 34921 states and 42688 transitions. [2022-11-18 18:46:27,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.4) internal successors, (657), 4 states have internal predecessors, (657), 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) [2022-11-18 18:46:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 34921 states and 42688 transitions. [2022-11-18 18:46:27,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2022-11-18 18:46:27,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:46:27,340 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:27,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:46:27,341 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:46:27,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1642656017, now seen corresponding path program 1 times [2022-11-18 18:46:27,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:27,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583966734] [2022-11-18 18:46:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:27,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 128 proven. 365 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-18 18:46:30,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:30,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583966734] [2022-11-18 18:46:30,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583966734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:46:30,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440504340] [2022-11-18 18:46:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:30,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:30,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:46:30,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:46:30,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:46:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:30,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 1002 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:46:30,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:46:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-18 18:46:30,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:46:30,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440504340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:46:30,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:46:30,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-18 18:46:30,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064839805] [2022-11-18 18:46:30,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:46:30,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:46:30,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:30,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:46:30,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:46:30,888 INFO L87 Difference]: Start difference. First operand 34921 states and 42688 transitions. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2022-11-18 18:46:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:46:41,219 INFO L93 Difference]: Finished difference Result 94584 states and 117561 transitions. [2022-11-18 18:46:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:46:41,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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 859 [2022-11-18 18:46:41,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:46:41,313 INFO L225 Difference]: With dead ends: 94584 [2022-11-18 18:46:41,313 INFO L226 Difference]: Without dead ends: 62395 [2022-11-18 18:46:41,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 860 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:46:41,338 INFO L413 NwaCegarLoop]: 1127 mSDtfsCounter, 1556 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 4165 mSolverCounterSat, 1912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 6077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1912 IncrementalHoareTripleChecker+Valid, 4165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:46:41,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 1259 Invalid, 6077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1912 Valid, 4165 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-18 18:46:41,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62395 states. [2022-11-18 18:46:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62395 to 60903. [2022-11-18 18:46:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60903 states, 60902 states have (on average 1.2042297461495517) internal successors, (73340), 60902 states have internal predecessors, (73340), 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) [2022-11-18 18:46:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60903 states to 60903 states and 73340 transitions. [2022-11-18 18:46:42,192 INFO L78 Accepts]: Start accepts. Automaton has 60903 states and 73340 transitions. Word has length 859 [2022-11-18 18:46:42,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:46:42,194 INFO L495 AbstractCegarLoop]: Abstraction has 60903 states and 73340 transitions. [2022-11-18 18:46:42,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2022-11-18 18:46:42,195 INFO L276 IsEmpty]: Start isEmpty. Operand 60903 states and 73340 transitions. [2022-11-18 18:46:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2022-11-18 18:46:42,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:46:42,210 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:42,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:46:42,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:46:42,417 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:46:42,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:42,418 INFO L85 PathProgramCache]: Analyzing trace with hash -854206697, now seen corresponding path program 1 times [2022-11-18 18:46:42,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:42,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415596284] [2022-11-18 18:46:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:42,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 510 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-11-18 18:46:44,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:44,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415596284] [2022-11-18 18:46:44,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415596284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:46:44,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:46:44,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:46:44,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692328349] [2022-11-18 18:46:44,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:46:44,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:46:44,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:44,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:46:44,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:46:44,555 INFO L87 Difference]: Start difference. First operand 60903 states and 73340 transitions. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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) [2022-11-18 18:46:56,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:46:56,050 INFO L93 Difference]: Finished difference Result 147865 states and 180254 transitions. [2022-11-18 18:46:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:46:56,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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 925 [2022-11-18 18:46:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:46:56,182 INFO L225 Difference]: With dead ends: 147865 [2022-11-18 18:46:56,182 INFO L226 Difference]: Without dead ends: 89694 [2022-11-18 18:46:56,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:46:56,228 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1586 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4237 mSolverCounterSat, 2344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 6581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2344 IncrementalHoareTripleChecker+Valid, 4237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:46:56,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 643 Invalid, 6581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2344 Valid, 4237 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-11-18 18:46:56,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89694 states. [2022-11-18 18:46:57,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89694 to 82750. [2022-11-18 18:46:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82750 states, 82749 states have (on average 1.2328487353321491) internal successors, (102017), 82749 states have internal predecessors, (102017), 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) [2022-11-18 18:46:57,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82750 states to 82750 states and 102017 transitions. [2022-11-18 18:46:57,484 INFO L78 Accepts]: Start accepts. Automaton has 82750 states and 102017 transitions. Word has length 925 [2022-11-18 18:46:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:46:57,486 INFO L495 AbstractCegarLoop]: Abstraction has 82750 states and 102017 transitions. [2022-11-18 18:46:57,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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) [2022-11-18 18:46:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 82750 states and 102017 transitions. [2022-11-18 18:46:57,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2022-11-18 18:46:57,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:46:57,506 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:46:57,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:46:57,507 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:46:57,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:46:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1899190886, now seen corresponding path program 1 times [2022-11-18 18:46:57,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:46:57,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679613822] [2022-11-18 18:46:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:46:57,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:46:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:46:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 911 backedges. 638 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-11-18 18:46:59,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:46:59,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679613822] [2022-11-18 18:46:59,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679613822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:46:59,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:46:59,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:46:59,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517697329] [2022-11-18 18:46:59,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:46:59,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:46:59,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:46:59,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:46:59,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:46:59,182 INFO L87 Difference]: Start difference. First operand 82750 states and 102017 transitions. Second operand has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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) [2022-11-18 18:47:17,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:17,944 INFO L93 Difference]: Finished difference Result 277643 states and 350702 transitions. [2022-11-18 18:47:17,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:47:17,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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 947 [2022-11-18 18:47:17,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:18,220 INFO L225 Difference]: With dead ends: 277643 [2022-11-18 18:47:18,220 INFO L226 Difference]: Without dead ends: 197625 [2022-11-18 18:47:18,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:47:18,523 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 3335 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 8777 mSolverCounterSat, 2798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3335 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 11575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2798 IncrementalHoareTripleChecker+Valid, 8777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:18,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3335 Valid, 1494 Invalid, 11575 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2798 Valid, 8777 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2022-11-18 18:47:18,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197625 states. [2022-11-18 18:47:21,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197625 to 194768. [2022-11-18 18:47:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194768 states, 194767 states have (on average 1.2057740787710445) internal successors, (234845), 194767 states have internal predecessors, (234845), 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) [2022-11-18 18:47:22,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194768 states to 194768 states and 234845 transitions. [2022-11-18 18:47:22,283 INFO L78 Accepts]: Start accepts. Automaton has 194768 states and 234845 transitions. Word has length 947 [2022-11-18 18:47:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:22,284 INFO L495 AbstractCegarLoop]: Abstraction has 194768 states and 234845 transitions. [2022-11-18 18:47:22,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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) [2022-11-18 18:47:22,285 INFO L276 IsEmpty]: Start isEmpty. Operand 194768 states and 234845 transitions. [2022-11-18 18:47:22,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 957 [2022-11-18 18:47:22,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:22,337 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:22,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:47:22,337 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:22,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:22,339 INFO L85 PathProgramCache]: Analyzing trace with hash 73083807, now seen corresponding path program 1 times [2022-11-18 18:47:22,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:22,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553057432] [2022-11-18 18:47:22,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:22,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-18 18:47:23,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:23,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553057432] [2022-11-18 18:47:23,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553057432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:23,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:23,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:23,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389317258] [2022-11-18 18:47:23,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:23,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:23,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:23,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:23,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:23,452 INFO L87 Difference]: Start difference. First operand 194768 states and 234845 transitions. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2022-11-18 18:47:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:34,267 INFO L93 Difference]: Finished difference Result 392268 states and 472548 transitions. [2022-11-18 18:47:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:34,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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 956 [2022-11-18 18:47:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:34,597 INFO L225 Difference]: With dead ends: 392268 [2022-11-18 18:47:34,597 INFO L226 Difference]: Without dead ends: 197502 [2022-11-18 18:47:34,731 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 [2022-11-18 18:47:34,732 INFO L413 NwaCegarLoop]: 2884 mSDtfsCounter, 1510 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 3675 mSolverCounterSat, 1477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 5152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1477 IncrementalHoareTripleChecker+Valid, 3675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:34,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 3067 Invalid, 5152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1477 Valid, 3675 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-18 18:47:34,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197502 states. [2022-11-18 18:47:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197502 to 190666. [2022-11-18 18:47:37,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190666 states, 190665 states have (on average 1.1488999029711797) internal successors, (219055), 190665 states have internal predecessors, (219055), 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) [2022-11-18 18:47:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190666 states to 190666 states and 219055 transitions. [2022-11-18 18:47:37,961 INFO L78 Accepts]: Start accepts. Automaton has 190666 states and 219055 transitions. Word has length 956 [2022-11-18 18:47:37,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:37,962 INFO L495 AbstractCegarLoop]: Abstraction has 190666 states and 219055 transitions. [2022-11-18 18:47:37,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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) [2022-11-18 18:47:37,963 INFO L276 IsEmpty]: Start isEmpty. Operand 190666 states and 219055 transitions. [2022-11-18 18:47:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1024 [2022-11-18 18:47:38,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:38,039 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:38,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:47:38,040 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:38,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:38,041 INFO L85 PathProgramCache]: Analyzing trace with hash -423037369, now seen corresponding path program 1 times [2022-11-18 18:47:38,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:38,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237345532] [2022-11-18 18:47:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:38,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:38,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 671 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-18 18:47:38,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:38,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237345532] [2022-11-18 18:47:38,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237345532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:38,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:38,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:38,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482290170] [2022-11-18 18:47:38,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:38,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:38,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:38,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:38,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:38,980 INFO L87 Difference]: Start difference. First operand 190666 states and 219055 transitions. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2022-11-18 18:47:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:50,349 INFO L93 Difference]: Finished difference Result 423646 states and 491122 transitions. [2022-11-18 18:47:50,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:50,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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 1023 [2022-11-18 18:47:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:50,691 INFO L225 Difference]: With dead ends: 423646 [2022-11-18 18:47:50,691 INFO L226 Difference]: Without dead ends: 241176 [2022-11-18 18:47:50,782 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 [2022-11-18 18:47:50,783 INFO L413 NwaCegarLoop]: 3006 mSDtfsCounter, 1353 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 4401 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 5164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 4401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:50,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 3192 Invalid, 5164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 4401 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-18 18:47:50,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241176 states. [2022-11-18 18:47:54,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241176 to 228871. [2022-11-18 18:47:54,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228871 states, 228870 states have (on average 1.1324288897627475) internal successors, (259179), 228870 states have internal predecessors, (259179), 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) [2022-11-18 18:47:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228871 states to 228871 states and 259179 transitions. [2022-11-18 18:47:54,598 INFO L78 Accepts]: Start accepts. Automaton has 228871 states and 259179 transitions. Word has length 1023 [2022-11-18 18:47:54,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:54,599 INFO L495 AbstractCegarLoop]: Abstraction has 228871 states and 259179 transitions. [2022-11-18 18:47:54,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 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) [2022-11-18 18:47:54,599 INFO L276 IsEmpty]: Start isEmpty. Operand 228871 states and 259179 transitions. [2022-11-18 18:47:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2022-11-18 18:47:54,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:54,618 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:54,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:47:54,618 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:54,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:54,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1279323689, now seen corresponding path program 1 times [2022-11-18 18:47:54,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:54,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211413935] [2022-11-18 18:47:54,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:54,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 950 proven. 66 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2022-11-18 18:47:58,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:58,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211413935] [2022-11-18 18:47:58,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211413935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:47:58,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866664458] [2022-11-18 18:47:58,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:58,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:47:58,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:58,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:47:58,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0371e969-7d6d-48e0-ae07-9c107d35b68a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:47:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:58,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:47:58,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:47:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 1113 trivial. 0 not checked. [2022-11-18 18:47:59,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:47:59,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866664458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:59,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:47:59,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-18 18:47:59,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29253956] [2022-11-18 18:47:59,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:59,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:59,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:59,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:59,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:47:59,029 INFO L87 Difference]: Start difference. First operand 228871 states and 259179 transitions. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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) [2022-11-18 18:48:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:11,057 INFO L93 Difference]: Finished difference Result 505657 states and 576429 transitions. [2022-11-18 18:48:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:11,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 1078 [2022-11-18 18:48:11,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:11,471 INFO L225 Difference]: With dead ends: 505657 [2022-11-18 18:48:11,471 INFO L226 Difference]: Without dead ends: 294539 [2022-11-18 18:48:11,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:48:11,591 INFO L413 NwaCegarLoop]: 1107 mSDtfsCounter, 1611 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4286 mSolverCounterSat, 1800 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 6086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1800 IncrementalHoareTripleChecker+Valid, 4286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:11,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 1194 Invalid, 6086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1800 Valid, 4286 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-18 18:48:12,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294539 states. [2022-11-18 18:48:15,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294539 to 280748. [2022-11-18 18:48:15,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280748 states, 280747 states have (on average 1.1397735327536893) internal successors, (319988), 280747 states have internal predecessors, (319988), 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)