./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem18_label27.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/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_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem18_label27.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/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_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/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 9d0d45835f7a9f8cecd406d9f9780f895fd97bdea10b2732542f2cbe8a04ba7e --- 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 19:41:20,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:41:20,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:41:20,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:41:20,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:41:20,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:41:20,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:41:20,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:41:20,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:41:20,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:41:20,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:41:20,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:41:20,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:41:20,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:41:20,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:41:20,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:41:20,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:41:20,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:41:20,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:41:20,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:41:20,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:41:20,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:41:20,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:41:20,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:41:20,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:41:20,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:41:20,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:41:20,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:41:20,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:41:20,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:41:20,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:41:20,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:41:20,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:41:20,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:41:20,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:41:20,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:41:20,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:41:20,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:41:20,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:41:20,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:41:20,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:41:20,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:41:20,252 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:41:20,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:41:20,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:41:20,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:41:20,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:41:20,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:41:20,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:41:20,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:41:20,256 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:41:20,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:41:20,257 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:41:20,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:41:20,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:41:20,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:41:20,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:41:20,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:41:20,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:41:20,259 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:41:20,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:41:20,259 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:41:20,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:41:20,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:41:20,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:41:20,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:41:20,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:41:20,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:41:20,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:41:20,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:41:20,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:41:20,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:41:20,263 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:41:20,263 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:41:20,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:41:20,264 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_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d0d45835f7a9f8cecd406d9f9780f895fd97bdea10b2732542f2cbe8a04ba7e [2022-11-18 19:41:20,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:41:20,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:41:20,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:41:20,635 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:41:20,636 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:41:20,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/eca-rers2012/Problem18_label27.c [2022-11-18 19:41:20,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/data/17f668fcf/196e7c213bc040adbe045a758c9eb8f9/FLAG30353e6a9 [2022-11-18 19:41:21,475 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:41:21,475 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/sv-benchmarks/c/eca-rers2012/Problem18_label27.c [2022-11-18 19:41:21,502 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/data/17f668fcf/196e7c213bc040adbe045a758c9eb8f9/FLAG30353e6a9 [2022-11-18 19:41:21,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/data/17f668fcf/196e7c213bc040adbe045a758c9eb8f9 [2022-11-18 19:41:21,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:41:21,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:41:21,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:41:21,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:41:21,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:41:21,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:41:21" (1/1) ... [2022-11-18 19:41:21,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d386ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:21, skipping insertion in model container [2022-11-18 19:41:21,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:41:21" (1/1) ... [2022-11-18 19:41:21,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:41:21,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:41:21,989 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_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/sv-benchmarks/c/eca-rers2012/Problem18_label27.c[3401,3414] [2022-11-18 19:41:22,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:41:22,745 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:41:22,761 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_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/sv-benchmarks/c/eca-rers2012/Problem18_label27.c[3401,3414] [2022-11-18 19:41:23,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:41:23,305 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:41:23,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23 WrapperNode [2022-11-18 19:41:23,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:41:23,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:41:23,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:41:23,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:41:23,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23" (1/1) ... [2022-11-18 19:41:23,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23" (1/1) ... [2022-11-18 19:41:23,608 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-11-18 19:41:23,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:41:23,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:41:23,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:41:23,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:41:23,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23" (1/1) ... [2022-11-18 19:41:23,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23" (1/1) ... [2022-11-18 19:41:23,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23" (1/1) ... [2022-11-18 19:41:23,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23" (1/1) ... [2022-11-18 19:41:23,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23" (1/1) ... [2022-11-18 19:41:23,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23" (1/1) ... [2022-11-18 19:41:23,821 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23" (1/1) ... [2022-11-18 19:41:23,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23" (1/1) ... [2022-11-18 19:41:23,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:41:23,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:41:23,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:41:23,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:41:23,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23" (1/1) ... [2022-11-18 19:41:23,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:41:23,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:41:23,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:41:23,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:41:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:41:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:41:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:41:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:41:24,057 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:41:24,060 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:41:28,109 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:41:28,122 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:41:28,122 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 19:41:28,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:41:28 BoogieIcfgContainer [2022-11-18 19:41:28,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:41:28,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:41:28,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:41:28,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:41:28,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:41:21" (1/3) ... [2022-11-18 19:41:28,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e62499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:41:28, skipping insertion in model container [2022-11-18 19:41:28,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:41:23" (2/3) ... [2022-11-18 19:41:28,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e62499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:41:28, skipping insertion in model container [2022-11-18 19:41:28,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:41:28" (3/3) ... [2022-11-18 19:41:28,134 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label27.c [2022-11-18 19:41:28,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:41:28,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:41:28,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:41:28,234 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;@2b515a42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:41:28,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 19:41:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 19:41:28,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 19:41:28,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:28,250 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] [2022-11-18 19:41:28,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:28,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1722039382, now seen corresponding path program 1 times [2022-11-18 19:41:28,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:28,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580751451] [2022-11-18 19:41:28,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:28,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:28,587 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 19:41:28,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:28,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580751451] [2022-11-18 19:41:28,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580751451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:28,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:28,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:41:28,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133127117] [2022-11-18 19:41:28,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:28,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:41:28,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:28,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:41:28,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:28,633 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 19:41:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:33,041 INFO L93 Difference]: Finished difference Result 2221 states and 4282 transitions. [2022-11-18 19:41:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:33,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-18 19:41:33,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:33,066 INFO L225 Difference]: With dead ends: 2221 [2022-11-18 19:41:33,066 INFO L226 Difference]: Without dead ends: 1384 [2022-11-18 19:41:33,072 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 19:41:33,080 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 765 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:33,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 487 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-18 19:41:33,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-11-18 19:41:33,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-11-18 19:41:33,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.5994215473608098) internal successors, (2212), 1383 states have internal predecessors, (2212), 0 states have call successors, (0), 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 19:41:33,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2212 transitions. [2022-11-18 19:41:33,204 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2212 transitions. Word has length 30 [2022-11-18 19:41:33,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:33,205 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2212 transitions. [2022-11-18 19:41:33,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 19:41:33,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2212 transitions. [2022-11-18 19:41:33,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-18 19:41:33,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:33,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:33,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:41:33,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:33,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:33,210 INFO L85 PathProgramCache]: Analyzing trace with hash 615426746, now seen corresponding path program 1 times [2022-11-18 19:41:33,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:33,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979312133] [2022-11-18 19:41:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:33,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:33,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:33,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979312133] [2022-11-18 19:41:33,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979312133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:33,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:33,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:41:33,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153069999] [2022-11-18 19:41:33,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:33,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:41:33,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:33,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:41:33,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:33,486 INFO L87 Difference]: Start difference. First operand 1384 states and 2212 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 19:41:36,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:36,956 INFO L93 Difference]: Finished difference Result 4146 states and 6631 transitions. [2022-11-18 19:41:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:36,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-11-18 19:41:36,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:36,966 INFO L225 Difference]: With dead ends: 4146 [2022-11-18 19:41:36,966 INFO L226 Difference]: Without dead ends: 2764 [2022-11-18 19:41:36,969 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 19:41:36,972 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:36,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 529 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-18 19:41:36,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-11-18 19:41:37,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-11-18 19:41:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.3503438291711907) internal successors, (3731), 2763 states have internal predecessors, (3731), 0 states have call successors, (0), 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 19:41:37,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3731 transitions. [2022-11-18 19:41:37,046 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3731 transitions. Word has length 95 [2022-11-18 19:41:37,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:37,048 INFO L495 AbstractCegarLoop]: Abstraction has 2764 states and 3731 transitions. [2022-11-18 19:41:37,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 19:41:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3731 transitions. [2022-11-18 19:41:37,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-18 19:41:37,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:37,066 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:41:37,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:41:37,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:37,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:37,075 INFO L85 PathProgramCache]: Analyzing trace with hash -407061005, now seen corresponding path program 1 times [2022-11-18 19:41:37,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:37,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020053404] [2022-11-18 19:41:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:37,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 19:41:37,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:37,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020053404] [2022-11-18 19:41:37,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020053404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:37,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:37,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:41:37,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923050106] [2022-11-18 19:41:37,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:37,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:41:37,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:41:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:41:37,813 INFO L87 Difference]: Start difference. First operand 2764 states and 3731 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 19:41:42,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:42,881 INFO L93 Difference]: Finished difference Result 7596 states and 9794 transitions. [2022-11-18 19:41:42,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:41:42,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 213 [2022-11-18 19:41:42,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:42,898 INFO L225 Difference]: With dead ends: 7596 [2022-11-18 19:41:42,898 INFO L226 Difference]: Without dead ends: 4834 [2022-11-18 19:41:42,902 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 19:41:42,903 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1873 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 4465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:42,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1873 Valid, 641 Invalid, 4465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-18 19:41:42,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-11-18 19:41:42,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4144. [2022-11-18 19:41:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4143 states have (on average 1.2698527636978034) internal successors, (5261), 4143 states have internal predecessors, (5261), 0 states have call successors, (0), 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 19:41:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5261 transitions. [2022-11-18 19:41:42,995 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5261 transitions. Word has length 213 [2022-11-18 19:41:42,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:42,995 INFO L495 AbstractCegarLoop]: Abstraction has 4144 states and 5261 transitions. [2022-11-18 19:41:42,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 19:41:42,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5261 transitions. [2022-11-18 19:41:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-18 19:41:43,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:43,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:41:43,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:41:43,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1785907472, now seen corresponding path program 1 times [2022-11-18 19:41:43,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:43,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429882190] [2022-11-18 19:41:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:43,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:43,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:43,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429882190] [2022-11-18 19:41:43,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429882190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:43,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:43,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:41:43,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287205461] [2022-11-18 19:41:43,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:43,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:41:43,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:43,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:41:43,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:43,432 INFO L87 Difference]: Start difference. First operand 4144 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:46,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:46,877 INFO L93 Difference]: Finished difference Result 12426 states and 15778 transitions. [2022-11-18 19:41:46,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:46,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2022-11-18 19:41:46,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:46,905 INFO L225 Difference]: With dead ends: 12426 [2022-11-18 19:41:46,905 INFO L226 Difference]: Without dead ends: 8284 [2022-11-18 19:41:46,911 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 19:41:46,912 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 693 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1991 mSolverCounterSat, 991 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 1991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:46,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 148 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [991 Valid, 1991 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-18 19:41:46,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2022-11-18 19:41:47,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 7594. [2022-11-18 19:41:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7594 states, 7593 states have (on average 1.2641907019623337) internal successors, (9599), 7593 states have internal predecessors, (9599), 0 states have call successors, (0), 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 19:41:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7594 states to 7594 states and 9599 transitions. [2022-11-18 19:41:47,114 INFO L78 Accepts]: Start accepts. Automaton has 7594 states and 9599 transitions. Word has length 329 [2022-11-18 19:41:47,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:47,117 INFO L495 AbstractCegarLoop]: Abstraction has 7594 states and 9599 transitions. [2022-11-18 19:41:47,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:47,117 INFO L276 IsEmpty]: Start isEmpty. Operand 7594 states and 9599 transitions. [2022-11-18 19:41:47,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-18 19:41:47,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:47,126 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:41:47,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:41:47,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:47,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:47,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1809393790, now seen corresponding path program 1 times [2022-11-18 19:41:47,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:47,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74548728] [2022-11-18 19:41:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:47,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:47,574 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-18 19:41:47,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:47,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74548728] [2022-11-18 19:41:47,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74548728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:47,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:47,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:41:47,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14975283] [2022-11-18 19:41:47,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:47,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:41:47,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:47,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:41:47,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:47,579 INFO L87 Difference]: Start difference. First operand 7594 states and 9599 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:51,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:51,046 INFO L93 Difference]: Finished difference Result 20706 states and 26458 transitions. [2022-11-18 19:41:51,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:51,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 414 [2022-11-18 19:41:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:51,116 INFO L225 Difference]: With dead ends: 20706 [2022-11-18 19:41:51,116 INFO L226 Difference]: Without dead ends: 13114 [2022-11-18 19:41:51,125 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 19:41:51,126 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 497 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1937 mSolverCounterSat, 1073 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1073 IncrementalHoareTripleChecker+Valid, 1937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:51,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 116 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1073 Valid, 1937 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-18 19:41:51,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13114 states. [2022-11-18 19:41:51,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13114 to 12424. [2022-11-18 19:41:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12424 states, 12423 states have (on average 1.2751348305562265) internal successors, (15841), 12423 states have internal predecessors, (15841), 0 states have call successors, (0), 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 19:41:51,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12424 states to 12424 states and 15841 transitions. [2022-11-18 19:41:51,377 INFO L78 Accepts]: Start accepts. Automaton has 12424 states and 15841 transitions. Word has length 414 [2022-11-18 19:41:51,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:51,378 INFO L495 AbstractCegarLoop]: Abstraction has 12424 states and 15841 transitions. [2022-11-18 19:41:51,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:51,383 INFO L276 IsEmpty]: Start isEmpty. Operand 12424 states and 15841 transitions. [2022-11-18 19:41:51,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-11-18 19:41:51,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:51,391 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:41:51,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:41:51,393 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:51,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:51,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1146126951, now seen corresponding path program 1 times [2022-11-18 19:41:51,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:51,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421771643] [2022-11-18 19:41:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:51,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-18 19:41:51,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:51,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421771643] [2022-11-18 19:41:51,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421771643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:51,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:51,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:41:51,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450599452] [2022-11-18 19:41:51,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:51,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:41:51,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:41:51,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:51,906 INFO L87 Difference]: Start difference. First operand 12424 states and 15841 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:55,443 INFO L93 Difference]: Finished difference Result 30366 states and 38271 transitions. [2022-11-18 19:41:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:55,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 415 [2022-11-18 19:41:55,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:55,474 INFO L225 Difference]: With dead ends: 30366 [2022-11-18 19:41:55,475 INFO L226 Difference]: Without dead ends: 17944 [2022-11-18 19:41:55,484 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 19:41:55,485 INFO L413 NwaCegarLoop]: 1293 mSDtfsCounter, 663 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:55,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1300 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-18 19:41:55,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17944 states. [2022-11-18 19:41:55,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17944 to 17944. [2022-11-18 19:41:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17944 states, 17943 states have (on average 1.2132307863790894) internal successors, (21769), 17943 states have internal predecessors, (21769), 0 states have call successors, (0), 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 19:41:55,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17944 states to 17944 states and 21769 transitions. [2022-11-18 19:41:55,750 INFO L78 Accepts]: Start accepts. Automaton has 17944 states and 21769 transitions. Word has length 415 [2022-11-18 19:41:55,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:41:55,751 INFO L495 AbstractCegarLoop]: Abstraction has 17944 states and 21769 transitions. [2022-11-18 19:41:55,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:41:55,752 INFO L276 IsEmpty]: Start isEmpty. Operand 17944 states and 21769 transitions. [2022-11-18 19:41:55,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-11-18 19:41:55,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:41:55,762 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:41:55,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:41:55,762 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:41:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:41:55,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1448398219, now seen corresponding path program 1 times [2022-11-18 19:41:55,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:41:55,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427211278] [2022-11-18 19:41:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:41:55,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:41:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:41:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:41:56,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:41:56,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427211278] [2022-11-18 19:41:56,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427211278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:41:56,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:41:56,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:41:56,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201717708] [2022-11-18 19:41:56,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:41:56,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:41:56,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:41:56,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:41:56,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:41:56,686 INFO L87 Difference]: Start difference. First operand 17944 states and 21769 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 19:41:59,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:41:59,948 INFO L93 Difference]: Finished difference Result 41406 states and 50412 transitions. [2022-11-18 19:41:59,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:41:59,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 436 [2022-11-18 19:41:59,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:41:59,979 INFO L225 Difference]: With dead ends: 41406 [2022-11-18 19:41:59,980 INFO L226 Difference]: Without dead ends: 23464 [2022-11-18 19:41:59,991 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 19:41:59,992 INFO L413 NwaCegarLoop]: 1088 mSDtfsCounter, 586 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:41:59,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1095 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-18 19:42:00,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23464 states. [2022-11-18 19:42:00,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23464 to 22774. [2022-11-18 19:42:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22774 states, 22773 states have (on average 1.1927721424493918) internal successors, (27163), 22773 states have internal predecessors, (27163), 0 states have call successors, (0), 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 19:42:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22774 states to 22774 states and 27163 transitions. [2022-11-18 19:42:00,287 INFO L78 Accepts]: Start accepts. Automaton has 22774 states and 27163 transitions. Word has length 436 [2022-11-18 19:42:00,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:00,288 INFO L495 AbstractCegarLoop]: Abstraction has 22774 states and 27163 transitions. [2022-11-18 19:42:00,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 19:42:00,289 INFO L276 IsEmpty]: Start isEmpty. Operand 22774 states and 27163 transitions. [2022-11-18 19:42:00,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-18 19:42:00,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:00,293 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:42:00,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:42:00,293 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:00,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:00,294 INFO L85 PathProgramCache]: Analyzing trace with hash -923099618, now seen corresponding path program 1 times [2022-11-18 19:42:00,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:00,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227385133] [2022-11-18 19:42:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:00,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:01,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:01,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227385133] [2022-11-18 19:42:01,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227385133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:01,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:01,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:42:01,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786004555] [2022-11-18 19:42:01,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:01,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:42:01,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:01,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:42:01,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:42:01,089 INFO L87 Difference]: Start difference. First operand 22774 states and 27163 transitions. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 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 19:42:04,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:04,413 INFO L93 Difference]: Finished difference Result 48996 states and 58500 transitions. [2022-11-18 19:42:04,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:42:04,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 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 443 [2022-11-18 19:42:04,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:04,461 INFO L225 Difference]: With dead ends: 48996 [2022-11-18 19:42:04,461 INFO L226 Difference]: Without dead ends: 26224 [2022-11-18 19:42:04,481 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 19:42:04,482 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 584 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:04,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 636 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-18 19:42:04,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26224 states. [2022-11-18 19:42:04,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26224 to 26224. [2022-11-18 19:42:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26224 states, 26223 states have (on average 1.1795370476299432) internal successors, (30931), 26223 states have internal predecessors, (30931), 0 states have call successors, (0), 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 19:42:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26224 states to 26224 states and 30931 transitions. [2022-11-18 19:42:04,907 INFO L78 Accepts]: Start accepts. Automaton has 26224 states and 30931 transitions. Word has length 443 [2022-11-18 19:42:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:04,908 INFO L495 AbstractCegarLoop]: Abstraction has 26224 states and 30931 transitions. [2022-11-18 19:42:04,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 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 19:42:04,908 INFO L276 IsEmpty]: Start isEmpty. Operand 26224 states and 30931 transitions. [2022-11-18 19:42:04,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-11-18 19:42:04,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:04,912 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:42:04,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:42:04,914 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:04,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:04,915 INFO L85 PathProgramCache]: Analyzing trace with hash -237194847, now seen corresponding path program 1 times [2022-11-18 19:42:04,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:04,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999095789] [2022-11-18 19:42:04,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:04,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-18 19:42:05,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:05,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999095789] [2022-11-18 19:42:05,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999095789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:05,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:05,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:42:05,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472393851] [2022-11-18 19:42:05,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:05,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:42:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:42:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:42:05,472 INFO L87 Difference]: Start difference. First operand 26224 states and 30931 transitions. Second operand has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 19:42:08,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:08,549 INFO L93 Difference]: Finished difference Result 54569 states and 64019 transitions. [2022-11-18 19:42:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:42:08,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 469 [2022-11-18 19:42:08,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:08,583 INFO L225 Difference]: With dead ends: 54569 [2022-11-18 19:42:08,583 INFO L226 Difference]: Without dead ends: 28294 [2022-11-18 19:42:08,598 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 19:42:08,599 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 531 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:08,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 636 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-18 19:42:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28294 states. [2022-11-18 19:42:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28294 to 28294. [2022-11-18 19:42:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28294 states, 28293 states have (on average 1.1284063195843494) internal successors, (31926), 28293 states have internal predecessors, (31926), 0 states have call successors, (0), 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 19:42:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28294 states to 28294 states and 31926 transitions. [2022-11-18 19:42:09,096 INFO L78 Accepts]: Start accepts. Automaton has 28294 states and 31926 transitions. Word has length 469 [2022-11-18 19:42:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:09,097 INFO L495 AbstractCegarLoop]: Abstraction has 28294 states and 31926 transitions. [2022-11-18 19:42:09,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.0) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 19:42:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 28294 states and 31926 transitions. [2022-11-18 19:42:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2022-11-18 19:42:09,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:09,111 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:42:09,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:42:09,111 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:09,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash -84053950, now seen corresponding path program 1 times [2022-11-18 19:42:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:09,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495606971] [2022-11-18 19:42:09,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:09,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2022-11-18 19:42:10,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:10,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495606971] [2022-11-18 19:42:10,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495606971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:10,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:10,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:42:10,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546558479] [2022-11-18 19:42:10,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:10,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:42:10,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:10,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:42:10,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:42:10,214 INFO L87 Difference]: Start difference. First operand 28294 states and 31926 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 19:42:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:13,099 INFO L93 Difference]: Finished difference Result 55896 states and 63156 transitions. [2022-11-18 19:42:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:42:13,100 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 1037 [2022-11-18 19:42:13,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:13,137 INFO L225 Difference]: With dead ends: 55896 [2022-11-18 19:42:13,137 INFO L226 Difference]: Without dead ends: 27604 [2022-11-18 19:42:13,155 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 19:42:13,157 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 587 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:13,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1091 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 19:42:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27604 states. [2022-11-18 19:42:13,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27604 to 27604. [2022-11-18 19:42:13,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27604 states, 27603 states have (on average 1.0922001231750171) internal successors, (30148), 27603 states have internal predecessors, (30148), 0 states have call successors, (0), 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 19:42:13,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27604 states to 27604 states and 30148 transitions. [2022-11-18 19:42:13,630 INFO L78 Accepts]: Start accepts. Automaton has 27604 states and 30148 transitions. Word has length 1037 [2022-11-18 19:42:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:13,631 INFO L495 AbstractCegarLoop]: Abstraction has 27604 states and 30148 transitions. [2022-11-18 19:42:13,631 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 19:42:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 27604 states and 30148 transitions. [2022-11-18 19:42:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1040 [2022-11-18 19:42:13,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:13,644 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:42:13,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:42:13,644 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:13,645 INFO L85 PathProgramCache]: Analyzing trace with hash 589029969, now seen corresponding path program 1 times [2022-11-18 19:42:13,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:13,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039456410] [2022-11-18 19:42:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:13,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2022-11-18 19:42:15,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:15,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039456410] [2022-11-18 19:42:15,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039456410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:15,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:15,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:42:15,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442779213] [2022-11-18 19:42:15,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:15,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:15,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:15,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:15,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:15,532 INFO L87 Difference]: Start difference. First operand 27604 states and 30148 transitions. Second operand has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 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 19:42:19,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:19,156 INFO L93 Difference]: Finished difference Result 65712 states and 72468 transitions. [2022-11-18 19:42:19,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:42:19,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 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 1039 [2022-11-18 19:42:19,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:19,187 INFO L225 Difference]: With dead ends: 65712 [2022-11-18 19:42:19,187 INFO L226 Difference]: Without dead ends: 31900 [2022-11-18 19:42:19,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 19:42:19,206 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 712 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 3375 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 4105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 3375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:19,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1117 Invalid, 4105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 3375 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-18 19:42:19,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31900 states. [2022-11-18 19:42:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31900 to 30364. [2022-11-18 19:42:19,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30364 states, 30363 states have (on average 1.0528603892895958) internal successors, (31968), 30363 states have internal predecessors, (31968), 0 states have call successors, (0), 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 19:42:19,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30364 states to 30364 states and 31968 transitions. [2022-11-18 19:42:19,696 INFO L78 Accepts]: Start accepts. Automaton has 30364 states and 31968 transitions. Word has length 1039 [2022-11-18 19:42:19,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:19,697 INFO L495 AbstractCegarLoop]: Abstraction has 30364 states and 31968 transitions. [2022-11-18 19:42:19,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 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 19:42:19,698 INFO L276 IsEmpty]: Start isEmpty. Operand 30364 states and 31968 transitions. [2022-11-18 19:42:19,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1119 [2022-11-18 19:42:19,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:19,723 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:42:19,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:42:19,724 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:19,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:19,725 INFO L85 PathProgramCache]: Analyzing trace with hash -261123617, now seen corresponding path program 1 times [2022-11-18 19:42:19,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:19,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441694460] [2022-11-18 19:42:19,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:19,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 500 proven. 650 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-18 19:42:22,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:22,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441694460] [2022-11-18 19:42:22,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441694460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:22,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684628994] [2022-11-18 19:42:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:22,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:22,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:22,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:22,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:42:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:23,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:42:23,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-11-18 19:42:23,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:42:23,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684628994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:23,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:42:23,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 19:42:23,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659390406] [2022-11-18 19:42:23,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:23,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:42:23,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:23,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:42:23,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:42:23,320 INFO L87 Difference]: Start difference. First operand 30364 states and 31968 transitions. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 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 19:42:25,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:25,833 INFO L93 Difference]: Finished difference Result 71076 states and 75465 transitions. [2022-11-18 19:42:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:42:25,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 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 1118 [2022-11-18 19:42:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:25,871 INFO L225 Difference]: With dead ends: 71076 [2022-11-18 19:42:25,871 INFO L226 Difference]: Without dead ends: 40714 [2022-11-18 19:42:25,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 1118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:42:25,885 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 654 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:25,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 163 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 19:42:25,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40714 states. [2022-11-18 19:42:26,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40714 to 40714. [2022-11-18 19:42:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40714 states, 40713 states have (on average 1.0548719082356988) internal successors, (42947), 40713 states have internal predecessors, (42947), 0 states have call successors, (0), 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 19:42:26,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40714 states to 40714 states and 42947 transitions. [2022-11-18 19:42:26,221 INFO L78 Accepts]: Start accepts. Automaton has 40714 states and 42947 transitions. Word has length 1118 [2022-11-18 19:42:26,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:26,222 INFO L495 AbstractCegarLoop]: Abstraction has 40714 states and 42947 transitions. [2022-11-18 19:42:26,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 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 19:42:26,223 INFO L276 IsEmpty]: Start isEmpty. Operand 40714 states and 42947 transitions. [2022-11-18 19:42:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2022-11-18 19:42:26,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:26,238 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:42:26,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:26,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:42:26,445 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:26,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:26,445 INFO L85 PathProgramCache]: Analyzing trace with hash 487120714, now seen corresponding path program 1 times [2022-11-18 19:42:26,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:26,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546020905] [2022-11-18 19:42:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:26,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 812 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-11-18 19:42:28,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:28,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546020905] [2022-11-18 19:42:28,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546020905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:28,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:28,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:42:28,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500068621] [2022-11-18 19:42:28,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:28,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:42:28,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:28,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:42:28,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:42:28,126 INFO L87 Difference]: Start difference. First operand 40714 states and 42947 transitions. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 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 19:42:31,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:31,611 INFO L93 Difference]: Finished difference Result 81426 states and 85892 transitions. [2022-11-18 19:42:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:42:31,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 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 1157 [2022-11-18 19:42:31,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:31,664 INFO L225 Difference]: With dead ends: 81426 [2022-11-18 19:42:31,664 INFO L226 Difference]: Without dead ends: 40714 [2022-11-18 19:42:31,683 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 19:42:31,684 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 991 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2660 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:31,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 69 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2660 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-18 19:42:31,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40714 states. [2022-11-18 19:42:31,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40714 to 40714. [2022-11-18 19:42:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40714 states, 40713 states have (on average 1.0546262864441334) internal successors, (42937), 40713 states have internal predecessors, (42937), 0 states have call successors, (0), 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 19:42:32,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40714 states to 40714 states and 42937 transitions. [2022-11-18 19:42:32,033 INFO L78 Accepts]: Start accepts. Automaton has 40714 states and 42937 transitions. Word has length 1157 [2022-11-18 19:42:32,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:32,034 INFO L495 AbstractCegarLoop]: Abstraction has 40714 states and 42937 transitions. [2022-11-18 19:42:32,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 3 states have internal predecessors, (827), 0 states have call successors, (0), 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 19:42:32,034 INFO L276 IsEmpty]: Start isEmpty. Operand 40714 states and 42937 transitions. [2022-11-18 19:42:32,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1189 [2022-11-18 19:42:32,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:32,051 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 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] [2022-11-18 19:42:32,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:42:32,051 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:32,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1816786544, now seen corresponding path program 1 times [2022-11-18 19:42:32,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:32,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20303172] [2022-11-18 19:42:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:32,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 634 proven. 2 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2022-11-18 19:42:33,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:33,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20303172] [2022-11-18 19:42:33,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20303172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:33,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890645827] [2022-11-18 19:42:33,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:33,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:33,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:33,027 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:33,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:42:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:33,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:42:33,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 1259 trivial. 0 not checked. [2022-11-18 19:42:33,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:42:33,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890645827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:33,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:42:33,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-18 19:42:33,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425886083] [2022-11-18 19:42:33,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:33,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:42:33,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:33,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:42:33,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:42:33,564 INFO L87 Difference]: Start difference. First operand 40714 states and 42937 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 19:42:36,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:36,180 INFO L93 Difference]: Finished difference Result 100746 states and 106767 transitions. [2022-11-18 19:42:36,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:42:36,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 1188 [2022-11-18 19:42:36,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:36,387 INFO L225 Difference]: With dead ends: 100746 [2022-11-18 19:42:36,387 INFO L226 Difference]: Without dead ends: 60034 [2022-11-18 19:42:36,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1192 GetRequests, 1188 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:42:36,399 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 697 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:36,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 873 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 19:42:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60034 states. [2022-11-18 19:42:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60034 to 58654. [2022-11-18 19:42:36,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58654 states, 58653 states have (on average 1.051165328286703) internal successors, (61654), 58653 states have internal predecessors, (61654), 0 states have call successors, (0), 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 19:42:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58654 states to 58654 states and 61654 transitions. [2022-11-18 19:42:36,880 INFO L78 Accepts]: Start accepts. Automaton has 58654 states and 61654 transitions. Word has length 1188 [2022-11-18 19:42:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:36,881 INFO L495 AbstractCegarLoop]: Abstraction has 58654 states and 61654 transitions. [2022-11-18 19:42:36,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 19:42:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 58654 states and 61654 transitions. [2022-11-18 19:42:36,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2022-11-18 19:42:36,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:36,893 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-11-18 19:42:36,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:42:37,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:42:37,102 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:37,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:37,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1055945293, now seen corresponding path program 1 times [2022-11-18 19:42:37,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:37,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657771429] [2022-11-18 19:42:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:37,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2022-11-18 19:42:37,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:37,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657771429] [2022-11-18 19:42:37,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657771429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:37,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:37,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:42:37,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109016402] [2022-11-18 19:42:37,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:37,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:42:37,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:37,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:42:37,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:42:37,733 INFO L87 Difference]: Start difference. First operand 58654 states and 61654 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 19:42:40,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:40,836 INFO L93 Difference]: Finished difference Result 135246 states and 142790 transitions. [2022-11-18 19:42:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:42:40,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 1202 [2022-11-18 19:42:40,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:40,910 INFO L225 Difference]: With dead ends: 135246 [2022-11-18 19:42:40,911 INFO L226 Difference]: Without dead ends: 76594 [2022-11-18 19:42:40,936 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 19:42:40,937 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 674 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:40,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 276 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 19:42:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76594 states. [2022-11-18 19:42:41,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76594 to 71764. [2022-11-18 19:42:41,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71764 states, 71763 states have (on average 1.0474339144127196) internal successors, (75167), 71763 states have internal predecessors, (75167), 0 states have call successors, (0), 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 19:42:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71764 states to 71764 states and 75167 transitions. [2022-11-18 19:42:41,892 INFO L78 Accepts]: Start accepts. Automaton has 71764 states and 75167 transitions. Word has length 1202 [2022-11-18 19:42:41,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:41,893 INFO L495 AbstractCegarLoop]: Abstraction has 71764 states and 75167 transitions. [2022-11-18 19:42:41,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 19:42:41,894 INFO L276 IsEmpty]: Start isEmpty. Operand 71764 states and 75167 transitions. [2022-11-18 19:42:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1245 [2022-11-18 19:42:41,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:41,906 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:41,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:42:41,906 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:41,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:41,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1752078724, now seen corresponding path program 1 times [2022-11-18 19:42:41,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:41,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219829935] [2022-11-18 19:42:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:41,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 405 proven. 694 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-18 19:42:44,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:44,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219829935] [2022-11-18 19:42:44,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219829935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:42:44,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601719160] [2022-11-18 19:42:44,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:44,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:42:44,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:44,097 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:42:44,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:42:44,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:44,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:42:44,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:42:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 494 proven. 0 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2022-11-18 19:42:44,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:42:44,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601719160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:44,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:42:44,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-18 19:42:44,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801458026] [2022-11-18 19:42:44,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:44,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:42:44,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:44,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:42:44,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:42:44,720 INFO L87 Difference]: Start difference. First operand 71764 states and 75167 transitions. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 19:42:47,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:47,354 INFO L93 Difference]: Finished difference Result 161466 states and 169936 transitions. [2022-11-18 19:42:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:42:47,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 1244 [2022-11-18 19:42:47,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:47,434 INFO L225 Difference]: With dead ends: 161466 [2022-11-18 19:42:47,434 INFO L226 Difference]: Without dead ends: 85564 [2022-11-18 19:42:47,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1249 GetRequests, 1244 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:42:47,457 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 624 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1650 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:47,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 881 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1650 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 19:42:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85564 states. [2022-11-18 19:42:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85564 to 85564. [2022-11-18 19:42:48,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85564 states, 85563 states have (on average 1.046877739209705) internal successors, (89574), 85563 states have internal predecessors, (89574), 0 states have call successors, (0), 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 19:42:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85564 states to 85564 states and 89574 transitions. [2022-11-18 19:42:48,452 INFO L78 Accepts]: Start accepts. Automaton has 85564 states and 89574 transitions. Word has length 1244 [2022-11-18 19:42:48,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:48,452 INFO L495 AbstractCegarLoop]: Abstraction has 85564 states and 89574 transitions. [2022-11-18 19:42:48,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 19:42:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 85564 states and 89574 transitions. [2022-11-18 19:42:48,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1363 [2022-11-18 19:42:48,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:48,667 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:42:48,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 19:42:48,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:42:48,873 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:48,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1812289283, now seen corresponding path program 1 times [2022-11-18 19:42:48,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:48,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372148497] [2022-11-18 19:42:48,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:48,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1848 backedges. 842 proven. 0 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2022-11-18 19:42:49,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:49,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372148497] [2022-11-18 19:42:49,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372148497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:49,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:49,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:42:49,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200122011] [2022-11-18 19:42:49,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:49,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:42:49,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:49,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:42:49,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:42:49,865 INFO L87 Difference]: Start difference. First operand 85564 states and 89574 transitions. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 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 19:42:52,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:52,298 INFO L93 Difference]: Finished difference Result 170436 states and 178455 transitions. [2022-11-18 19:42:52,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:42:52,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 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 1362 [2022-11-18 19:42:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:52,371 INFO L225 Difference]: With dead ends: 170436 [2022-11-18 19:42:52,371 INFO L226 Difference]: Without dead ends: 85564 [2022-11-18 19:42:52,399 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 19:42:52,399 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 501 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:52,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 934 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:42:52,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85564 states. [2022-11-18 19:42:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85564 to 84184. [2022-11-18 19:42:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84184 states, 84183 states have (on average 1.0425501585830868) internal successors, (87765), 84183 states have internal predecessors, (87765), 0 states have call successors, (0), 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 19:42:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84184 states to 84184 states and 87765 transitions. [2022-11-18 19:42:53,434 INFO L78 Accepts]: Start accepts. Automaton has 84184 states and 87765 transitions. Word has length 1362 [2022-11-18 19:42:53,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:53,435 INFO L495 AbstractCegarLoop]: Abstraction has 84184 states and 87765 transitions. [2022-11-18 19:42:53,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 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 19:42:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 84184 states and 87765 transitions. [2022-11-18 19:42:53,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1415 [2022-11-18 19:42:53,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:53,456 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:42:53,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:42:53,456 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:53,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:53,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1435573839, now seen corresponding path program 1 times [2022-11-18 19:42:53,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:53,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887480414] [2022-11-18 19:42:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:53,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1688 backedges. 702 proven. 0 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2022-11-18 19:42:55,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:55,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887480414] [2022-11-18 19:42:55,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887480414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:55,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:55,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:42:55,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635134109] [2022-11-18 19:42:55,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:55,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:42:55,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:55,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:42:55,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:42:55,686 INFO L87 Difference]: Start difference. First operand 84184 states and 87765 transitions. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 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 19:42:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:42:58,009 INFO L93 Difference]: Finished difference Result 167676 states and 174837 transitions. [2022-11-18 19:42:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:42:58,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 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 1414 [2022-11-18 19:42:58,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:42:58,083 INFO L225 Difference]: With dead ends: 167676 [2022-11-18 19:42:58,083 INFO L226 Difference]: Without dead ends: 84184 [2022-11-18 19:42:58,113 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 19:42:58,114 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 587 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:42:58,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 746 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 19:42:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84184 states. [2022-11-18 19:42:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84184 to 84184. [2022-11-18 19:42:58,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84184 states, 84183 states have (on average 1.037656058824228) internal successors, (87353), 84183 states have internal predecessors, (87353), 0 states have call successors, (0), 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 19:42:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84184 states to 84184 states and 87353 transitions. [2022-11-18 19:42:59,308 INFO L78 Accepts]: Start accepts. Automaton has 84184 states and 87353 transitions. Word has length 1414 [2022-11-18 19:42:59,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:42:59,309 INFO L495 AbstractCegarLoop]: Abstraction has 84184 states and 87353 transitions. [2022-11-18 19:42:59,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 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 19:42:59,310 INFO L276 IsEmpty]: Start isEmpty. Operand 84184 states and 87353 transitions. [2022-11-18 19:42:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1488 [2022-11-18 19:42:59,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:42:59,360 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:42:59,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:42:59,373 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:42:59,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:59,374 INFO L85 PathProgramCache]: Analyzing trace with hash -588848989, now seen corresponding path program 1 times [2022-11-18 19:42:59,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:59,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900321993] [2022-11-18 19:42:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:59,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2479 backedges. 833 proven. 1353 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-11-18 19:43:01,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:01,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900321993] [2022-11-18 19:43:01,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900321993] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:01,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980981102] [2022-11-18 19:43:01,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:01,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:01,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:01,812 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:01,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:43:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:02,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1751 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:43:02,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2479 backedges. 1447 proven. 0 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2022-11-18 19:43:02,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:43:02,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980981102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:02,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:43:02,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-18 19:43:02,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381839526] [2022-11-18 19:43:02,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:02,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:43:02,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:02,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:43:02,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:43:02,943 INFO L87 Difference]: Start difference. First operand 84184 states and 87353 transitions. Second operand has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 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 19:43:05,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:05,428 INFO L93 Difference]: Finished difference Result 166296 states and 172590 transitions. [2022-11-18 19:43:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:43:05,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 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 1487 [2022-11-18 19:43:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:05,500 INFO L225 Difference]: With dead ends: 166296 [2022-11-18 19:43:05,500 INFO L226 Difference]: Without dead ends: 82804 [2022-11-18 19:43:05,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1493 GetRequests, 1487 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:43:05,525 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 425 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:05,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 889 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:43:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82804 states. [2022-11-18 19:43:06,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82804 to 79354. [2022-11-18 19:43:06,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79354 states, 79353 states have (on average 1.0266278527591899) internal successors, (81466), 79353 states have internal predecessors, (81466), 0 states have call successors, (0), 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 19:43:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79354 states to 79354 states and 81466 transitions. [2022-11-18 19:43:06,397 INFO L78 Accepts]: Start accepts. Automaton has 79354 states and 81466 transitions. Word has length 1487 [2022-11-18 19:43:06,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:06,398 INFO L495 AbstractCegarLoop]: Abstraction has 79354 states and 81466 transitions. [2022-11-18 19:43:06,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.0) internal successors, (882), 3 states have internal predecessors, (882), 0 states have call successors, (0), 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 19:43:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 79354 states and 81466 transitions. [2022-11-18 19:43:06,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1505 [2022-11-18 19:43:06,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:06,427 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, 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, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:43:06,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:06,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb494c3b-cd4f-4905-88d9-4a47d8ec2484/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:06,634 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:06,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash -79090786, now seen corresponding path program 1 times [2022-11-18 19:43:06,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:06,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758480606] [2022-11-18 19:43:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:06,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2075 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2022-11-18 19:43:07,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:07,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758480606] [2022-11-18 19:43:07,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758480606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:07,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:07,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:07,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78989497] [2022-11-18 19:43:07,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:07,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:43:07,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:07,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:43:07,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:43:07,886 INFO L87 Difference]: Start difference. First operand 79354 states and 81466 transitions. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 19:43:10,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:10,553 INFO L93 Difference]: Finished difference Result 160086 states and 164329 transitions. [2022-11-18 19:43:10,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:43:10,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 1504 [2022-11-18 19:43:10,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:10,619 INFO L225 Difference]: With dead ends: 160086 [2022-11-18 19:43:10,620 INFO L226 Difference]: Without dead ends: 81424 [2022-11-18 19:43:10,649 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 19:43:10,650 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 619 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:10,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 70 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 19:43:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81424 states. [2022-11-18 19:43:11,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81424 to 79354. [2022-11-18 19:43:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79354 states, 79353 states have (on average 1.0260229606946176) internal successors, (81418), 79353 states have internal predecessors, (81418), 0 states have call successors, (0), 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 19:43:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79354 states to 79354 states and 81418 transitions. [2022-11-18 19:43:11,561 INFO L78 Accepts]: Start accepts. Automaton has 79354 states and 81418 transitions. Word has length 1504 [2022-11-18 19:43:11,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:11,561 INFO L495 AbstractCegarLoop]: Abstraction has 79354 states and 81418 transitions. [2022-11-18 19:43:11,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 0 states have call successors, (0), 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 19:43:11,562 INFO L276 IsEmpty]: Start isEmpty. Operand 79354 states and 81418 transitions. [2022-11-18 19:43:11,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1572 [2022-11-18 19:43:11,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:11,604 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, 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, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:43:11,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:43:11,604 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:11,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:11,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2076672547, now seen corresponding path program 1 times [2022-11-18 19:43:11,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:11,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023004897] [2022-11-18 19:43:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:11,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2276 backedges. 1833 proven. 0 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2022-11-18 19:43:13,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:13,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023004897] [2022-11-18 19:43:13,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023004897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:13,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:13,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:13,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500976979] [2022-11-18 19:43:13,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:13,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:43:13,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:13,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:43:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:43:13,329 INFO L87 Difference]: Start difference. First operand 79354 states and 81418 transitions. Second operand has 3 states, 3 states have (on average 386.3333333333333) internal successors, (1159), 3 states have internal predecessors, (1159), 0 states have call successors, (0), 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 19:43:16,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:16,197 INFO L93 Difference]: Finished difference Result 164916 states and 169355 transitions. [2022-11-18 19:43:16,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:43:16,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 386.3333333333333) internal successors, (1159), 3 states have internal predecessors, (1159), 0 states have call successors, (0), 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 1571 [2022-11-18 19:43:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:16,277 INFO L225 Difference]: With dead ends: 164916 [2022-11-18 19:43:16,277 INFO L226 Difference]: Without dead ends: 86254 [2022-11-18 19:43:16,315 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 19:43:16,316 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 340 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:16,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 205 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 19:43:16,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86254 states. [2022-11-18 19:43:17,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86254 to 84874. [2022-11-18 19:43:17,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84874 states, 84873 states have (on average 1.0223274775252436) internal successors, (86768), 84873 states have internal predecessors, (86768), 0 states have call successors, (0), 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 19:43:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84874 states to 84874 states and 86768 transitions. [2022-11-18 19:43:17,606 INFO L78 Accepts]: Start accepts. Automaton has 84874 states and 86768 transitions. Word has length 1571 [2022-11-18 19:43:17,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:17,607 INFO L495 AbstractCegarLoop]: Abstraction has 84874 states and 86768 transitions. [2022-11-18 19:43:17,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 386.3333333333333) internal successors, (1159), 3 states have internal predecessors, (1159), 0 states have call successors, (0), 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 19:43:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 84874 states and 86768 transitions. [2022-11-18 19:43:17,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1895 [2022-11-18 19:43:17,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:17,676 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:17,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:43:17,676 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -821382898, now seen corresponding path program 1 times [2022-11-18 19:43:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:17,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268649527] [2022-11-18 19:43:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 2548 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2022-11-18 19:43:19,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:19,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268649527] [2022-11-18 19:43:19,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268649527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:19,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:19,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:19,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975512140] [2022-11-18 19:43:19,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:19,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:43:19,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:19,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:43:19,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:43:19,740 INFO L87 Difference]: Start difference. First operand 84874 states and 86768 transitions. Second operand has 3 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 0 states have call successors, (0), 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 19:43:22,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:22,685 INFO L93 Difference]: Finished difference Result 187686 states and 192019 transitions. [2022-11-18 19:43:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:43:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 0 states have call successors, (0), 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 1894 [2022-11-18 19:43:22,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:22,797 INFO L225 Difference]: With dead ends: 187686 [2022-11-18 19:43:22,797 INFO L226 Difference]: Without dead ends: 103504 [2022-11-18 19:43:22,839 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 19:43:22,840 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 361 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1747 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:22,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 172 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1747 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 19:43:22,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103504 states. [2022-11-18 19:43:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103504 to 100744. [2022-11-18 19:43:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100744 states, 100743 states have (on average 1.022413467933256) internal successors, (103001), 100743 states have internal predecessors, (103001), 0 states have call successors, (0), 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 19:43:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100744 states to 100744 states and 103001 transitions. [2022-11-18 19:43:24,320 INFO L78 Accepts]: Start accepts. Automaton has 100744 states and 103001 transitions. Word has length 1894 [2022-11-18 19:43:24,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:43:24,321 INFO L495 AbstractCegarLoop]: Abstraction has 100744 states and 103001 transitions. [2022-11-18 19:43:24,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 0 states have call successors, (0), 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 19:43:24,322 INFO L276 IsEmpty]: Start isEmpty. Operand 100744 states and 103001 transitions. [2022-11-18 19:43:24,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1930 [2022-11-18 19:43:24,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:43:24,364 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:24,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:43:24,365 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 19:43:24,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:24,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1140291391, now seen corresponding path program 1 times [2022-11-18 19:43:24,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:24,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547234246] [2022-11-18 19:43:24,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:24,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4673 backedges. 2087 proven. 0 refuted. 0 times theorem prover too weak. 2586 trivial. 0 not checked. [2022-11-18 19:43:26,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:26,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547234246] [2022-11-18 19:43:26,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547234246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:26,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:26,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:26,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341804203] [2022-11-18 19:43:26,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:26,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:43:26,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:26,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:43:26,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:43:26,041 INFO L87 Difference]: Start difference. First operand 100744 states and 103001 transitions. Second operand has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 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 19:43:29,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:43:29,268 INFO L93 Difference]: Finished difference Result 213216 states and 217943 transitions. [2022-11-18 19:43:29,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:43:29,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 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 1929 [2022-11-18 19:43:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:43:29,392 INFO L225 Difference]: With dead ends: 213216 [2022-11-18 19:43:29,392 INFO L226 Difference]: Without dead ends: 113164 [2022-11-18 19:43:29,436 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 19:43:29,437 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 456 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:43:29,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 843 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time]