./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label33.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8 --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 aaccf385f935203878b819a92144fc9de308865fc678d0507ba69ad2b46a0a7a --- 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-e04fb08 [2022-11-16 12:18:55,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:18:55,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:18:55,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:18:55,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:18:55,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:18:55,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:18:55,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:18:55,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:18:55,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:18:55,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:18:55,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:18:55,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:18:55,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:18:55,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:18:55,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:18:55,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:18:55,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:18:55,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:18:55,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:18:55,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:18:55,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:18:55,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:18:55,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:18:55,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:18:55,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:18:55,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:18:55,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:18:55,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:18:55,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:18:55,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:18:55,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:18:55,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:18:55,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:18:55,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:18:55,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:18:55,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:18:55,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:18:55,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:18:55,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:18:55,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:18:55,209 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:18:55,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:18:55,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:18:55,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:18:55,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:18:55,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:18:55,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:18:55,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:18:55,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:18:55,251 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:18:55,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:18:55,252 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:18:55,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:18:55,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:18:55,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:18:55,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:18:55,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:18:55,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:18:55,254 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:18:55,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:18:55,254 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:18:55,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:18:55,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:18:55,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:18:55,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:18:55,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:18:55,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:18:55,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:18:55,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:18:55,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:18:55,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:18:55,258 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:18:55,258 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:18:55,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:18:55,259 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_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaccf385f935203878b819a92144fc9de308865fc678d0507ba69ad2b46a0a7a [2022-11-16 12:18:55,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:18:55,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:18:55,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:18:55,582 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:18:55,583 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:18:55,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem13_label33.c [2022-11-16 12:18:55,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/data/3f7c9d507/874dec30a8b34ee288a6987a76d7cbea/FLAGb35543649 [2022-11-16 12:18:56,509 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:18:56,510 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/sv-benchmarks/c/eca-rers2012/Problem13_label33.c [2022-11-16 12:18:56,555 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/data/3f7c9d507/874dec30a8b34ee288a6987a76d7cbea/FLAGb35543649 [2022-11-16 12:18:56,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/data/3f7c9d507/874dec30a8b34ee288a6987a76d7cbea [2022-11-16 12:18:56,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:18:56,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:18:56,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:18:56,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:18:57,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:18:57,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:56" (1/1) ... [2022-11-16 12:18:57,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a423ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:57, skipping insertion in model container [2022-11-16 12:18:57,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:18:56" (1/1) ... [2022-11-16 12:18:57,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:18:57,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:18:57,534 WARN L229 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_7543d9bc-0545-4638-8b39-21c08dd39429/sv-benchmarks/c/eca-rers2012/Problem13_label33.c[5177,5190] [2022-11-16 12:18:58,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:18:58,656 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:18:58,693 WARN L229 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_7543d9bc-0545-4638-8b39-21c08dd39429/sv-benchmarks/c/eca-rers2012/Problem13_label33.c[5177,5190] [2022-11-16 12:18:59,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:18:59,408 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:18:59,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59 WrapperNode [2022-11-16 12:18:59,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:18:59,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:18:59,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:18:59,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:18:59,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:18:59,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,186 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-16 12:19:00,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:19:00,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:19:00,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:19:00,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:19:00,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,780 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:00,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:01,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:19:01,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:19:01,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:19:01,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:19:01,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (1/1) ... [2022-11-16 12:19:01,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:19:01,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:01,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:19:01,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:19:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:19:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:19:01,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:19:01,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:19:01,200 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:19:01,202 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:19:07,896 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:19:07,911 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:19:07,911 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:19:07,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:07 BoogieIcfgContainer [2022-11-16 12:19:07,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:19:07,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:19:07,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:19:07,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:19:07,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:18:56" (1/3) ... [2022-11-16 12:19:07,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e1f880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:19:07, skipping insertion in model container [2022-11-16 12:19:07,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:18:59" (2/3) ... [2022-11-16 12:19:07,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e1f880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:19:07, skipping insertion in model container [2022-11-16 12:19:07,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:07" (3/3) ... [2022-11-16 12:19:07,924 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label33.c [2022-11-16 12:19:07,943 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:19:07,943 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:19:08,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:19:08,035 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;@772d34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:19:08,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:19:08,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 12:19:08,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:08,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:08,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:08,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:08,057 INFO L85 PathProgramCache]: Analyzing trace with hash -596708735, now seen corresponding path program 1 times [2022-11-16 12:19:08,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:08,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465332861] [2022-11-16 12:19:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:08,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:08,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:08,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465332861] [2022-11-16 12:19:08,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465332861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:08,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:08,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:19:08,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200681054] [2022-11-16 12:19:08,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:08,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:19:08,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:08,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:19:08,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:19:08,506 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:14,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:14,272 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2022-11-16 12:19:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:19:14,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-11-16 12:19:14,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:14,299 INFO L225 Difference]: With dead ends: 3082 [2022-11-16 12:19:14,299 INFO L226 Difference]: Without dead ends: 1899 [2022-11-16 12:19:14,306 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 [2022-11-16 12:19:14,309 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1004 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:14,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-16 12:19:14,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-11-16 12:19:14,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2022-11-16 12:19:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2022-11-16 12:19:14,431 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 35 [2022-11-16 12:19:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:14,432 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2022-11-16 12:19:14,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2022-11-16 12:19:14,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 12:19:14,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:14,435 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:14,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:19:14,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1328340326, now seen corresponding path program 1 times [2022-11-16 12:19:14,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:14,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081610653] [2022-11-16 12:19:14,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:14,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:14,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:14,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081610653] [2022-11-16 12:19:14,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081610653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:14,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:14,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:19:14,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892413763] [2022-11-16 12:19:14,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:14,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:19:14,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:14,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:19:14,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:19:14,714 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:19,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:19,574 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2022-11-16 12:19:19,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:19:19,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-11-16 12:19:19,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:19,593 INFO L225 Difference]: With dead ends: 5384 [2022-11-16 12:19:19,594 INFO L226 Difference]: Without dead ends: 3492 [2022-11-16 12:19:19,597 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 [2022-11-16 12:19:19,598 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:19,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 12:19:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-11-16 12:19:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2022-11-16 12:19:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2022-11-16 12:19:19,678 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 100 [2022-11-16 12:19:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:19,679 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2022-11-16 12:19:19,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:19,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2022-11-16 12:19:19,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 12:19:19,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:19,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:19,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:19:19,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:19,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash 497243647, now seen corresponding path program 1 times [2022-11-16 12:19:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:19,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231430655] [2022-11-16 12:19:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:19,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:20,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:20,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231430655] [2022-11-16 12:19:20,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231430655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:20,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:20,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:19:20,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475698597] [2022-11-16 12:19:20,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:20,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:19:20,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:20,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:19:20,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:19:20,014 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:24,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:24,988 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2022-11-16 12:19:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:19:24,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-11-16 12:19:24,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:25,015 INFO L225 Difference]: With dead ends: 10169 [2022-11-16 12:19:25,015 INFO L226 Difference]: Without dead ends: 6680 [2022-11-16 12:19:25,021 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 [2022-11-16 12:19:25,023 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:25,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-16 12:19:25,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2022-11-16 12:19:25,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2022-11-16 12:19:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:25,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2022-11-16 12:19:25,197 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 102 [2022-11-16 12:19:25,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:25,197 INFO L495 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2022-11-16 12:19:25,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:25,198 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2022-11-16 12:19:25,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-16 12:19:25,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:25,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:25,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:19:25,202 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:25,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:25,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1488021875, now seen corresponding path program 1 times [2022-11-16 12:19:25,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:25,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369306587] [2022-11-16 12:19:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:25,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:25,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:25,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369306587] [2022-11-16 12:19:25,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369306587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:25,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:25,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:19:25,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189890256] [2022-11-16 12:19:25,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:25,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:19:25,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:25,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:19:25,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:19:25,822 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:29,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:29,999 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2022-11-16 12:19:30,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:19:30,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-11-16 12:19:30,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:30,022 INFO L225 Difference]: With dead ends: 14123 [2022-11-16 12:19:30,022 INFO L226 Difference]: Without dead ends: 7456 [2022-11-16 12:19:30,030 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 [2022-11-16 12:19:30,031 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:30,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 12:19:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2022-11-16 12:19:30,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2022-11-16 12:19:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2022-11-16 12:19:30,165 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 146 [2022-11-16 12:19:30,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:30,166 INFO L495 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2022-11-16 12:19:30,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:30,166 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2022-11-16 12:19:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-16 12:19:30,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:30,169 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:30,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:19:30,169 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:30,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1668473655, now seen corresponding path program 1 times [2022-11-16 12:19:30,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:30,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234015139] [2022-11-16 12:19:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:30,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:30,351 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 12:19:30,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:30,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234015139] [2022-11-16 12:19:30,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234015139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:30,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:30,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:19:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126859697] [2022-11-16 12:19:30,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:30,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:19:30,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:30,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:19:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:19:30,355 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:35,037 INFO L93 Difference]: Finished difference Result 19656 states and 26991 transitions. [2022-11-16 12:19:35,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:19:35,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 160 [2022-11-16 12:19:35,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:35,081 INFO L225 Difference]: With dead ends: 19656 [2022-11-16 12:19:35,081 INFO L226 Difference]: Without dead ends: 12989 [2022-11-16 12:19:35,089 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 [2022-11-16 12:19:35,090 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:35,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1222 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-16 12:19:35,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12989 states. [2022-11-16 12:19:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12989 to 12972. [2022-11-16 12:19:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.235910878112713) internal successors, (16031), 12971 states have internal predecessors, (16031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16031 transitions. [2022-11-16 12:19:35,424 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16031 transitions. Word has length 160 [2022-11-16 12:19:35,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:35,425 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16031 transitions. [2022-11-16 12:19:35,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16031 transitions. [2022-11-16 12:19:35,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2022-11-16 12:19:35,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:35,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:35,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:19:35,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:35,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:35,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1749118278, now seen corresponding path program 1 times [2022-11-16 12:19:35,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:35,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67192733] [2022-11-16 12:19:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:35,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-16 12:19:35,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:35,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67192733] [2022-11-16 12:19:35,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67192733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:35,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:35,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:19:35,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799835083] [2022-11-16 12:19:35,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:35,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:19:35,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:35,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:19:35,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:19:35,885 INFO L87 Difference]: Start difference. First operand 12972 states and 16031 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:40,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:40,282 INFO L93 Difference]: Finished difference Result 22792 states and 28651 transitions. [2022-11-16 12:19:40,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:19:40,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 247 [2022-11-16 12:19:40,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:40,324 INFO L225 Difference]: With dead ends: 22792 [2022-11-16 12:19:40,324 INFO L226 Difference]: Without dead ends: 12980 [2022-11-16 12:19:40,333 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 [2022-11-16 12:19:40,334 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:40,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 12:19:40,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12980 states. [2022-11-16 12:19:40,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12980 to 12972. [2022-11-16 12:19:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.2347544522396114) internal successors, (16016), 12971 states have internal predecessors, (16016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16016 transitions. [2022-11-16 12:19:40,529 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16016 transitions. Word has length 247 [2022-11-16 12:19:40,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:40,530 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16016 transitions. [2022-11-16 12:19:40,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16016 transitions. [2022-11-16 12:19:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-16 12:19:40,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:40,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:19:40,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:19:40,535 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:40,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:40,536 INFO L85 PathProgramCache]: Analyzing trace with hash 265245920, now seen corresponding path program 1 times [2022-11-16 12:19:40,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:40,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243845344] [2022-11-16 12:19:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:40,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:40,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:40,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243845344] [2022-11-16 12:19:40,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243845344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:40,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:40,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:19:40,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451298431] [2022-11-16 12:19:40,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:40,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:19:40,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:40,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:19:40,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:19:40,748 INFO L87 Difference]: Start difference. First operand 12972 states and 16016 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:45,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:45,631 INFO L93 Difference]: Finished difference Result 36166 states and 45134 transitions. [2022-11-16 12:19:45,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:19:45,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 249 [2022-11-16 12:19:45,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:45,671 INFO L225 Difference]: With dead ends: 36166 [2022-11-16 12:19:45,672 INFO L226 Difference]: Without dead ends: 23196 [2022-11-16 12:19:45,684 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 [2022-11-16 12:19:45,685 INFO L413 NwaCegarLoop]: 1851 mSDtfsCounter, 841 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:45,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1989 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 12:19:45,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2022-11-16 12:19:45,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 22404. [2022-11-16 12:19:45,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22404 states, 22403 states have (on average 1.1931884122662144) internal successors, (26731), 22403 states have internal predecessors, (26731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 26731 transitions. [2022-11-16 12:19:45,978 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 26731 transitions. Word has length 249 [2022-11-16 12:19:45,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:45,979 INFO L495 AbstractCegarLoop]: Abstraction has 22404 states and 26731 transitions. [2022-11-16 12:19:45,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:45,980 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 26731 transitions. [2022-11-16 12:19:45,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-16 12:19:45,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:45,985 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:45,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:19:45,985 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:45,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1770450640, now seen corresponding path program 1 times [2022-11-16 12:19:45,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:45,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785645782] [2022-11-16 12:19:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:45,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 12:19:46,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:46,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785645782] [2022-11-16 12:19:46,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785645782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:46,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:46,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:19:46,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292720767] [2022-11-16 12:19:46,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:46,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:19:46,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:46,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:19:46,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:19:46,213 INFO L87 Difference]: Start difference. First operand 22404 states and 26731 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:51,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:51,168 INFO L93 Difference]: Finished difference Result 55046 states and 66948 transitions. [2022-11-16 12:19:51,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:19:51,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 271 [2022-11-16 12:19:51,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:51,228 INFO L225 Difference]: With dead ends: 55046 [2022-11-16 12:19:51,228 INFO L226 Difference]: Without dead ends: 33431 [2022-11-16 12:19:51,249 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 [2022-11-16 12:19:51,250 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 882 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:51,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 928 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 12:19:51,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33431 states. [2022-11-16 12:19:51,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33431 to 32635. [2022-11-16 12:19:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32635 states, 32634 states have (on average 1.176135318992462) internal successors, (38382), 32634 states have internal predecessors, (38382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32635 states to 32635 states and 38382 transitions. [2022-11-16 12:19:51,714 INFO L78 Accepts]: Start accepts. Automaton has 32635 states and 38382 transitions. Word has length 271 [2022-11-16 12:19:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:51,715 INFO L495 AbstractCegarLoop]: Abstraction has 32635 states and 38382 transitions. [2022-11-16 12:19:51,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:51,716 INFO L276 IsEmpty]: Start isEmpty. Operand 32635 states and 38382 transitions. [2022-11-16 12:19:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-16 12:19:51,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:51,723 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:19:51,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:19:51,723 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:51,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:51,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1030407125, now seen corresponding path program 1 times [2022-11-16 12:19:51,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:51,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414535074] [2022-11-16 12:19:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:51,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:51,997 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-16 12:19:51,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:51,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414535074] [2022-11-16 12:19:51,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414535074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:51,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:51,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:19:51,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463270593] [2022-11-16 12:19:51,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:52,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:19:52,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:52,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:19:52,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:19:52,001 INFO L87 Difference]: Start difference. First operand 32635 states and 38382 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:57,170 INFO L93 Difference]: Finished difference Result 76294 states and 91193 transitions. [2022-11-16 12:19:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:19:57,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 326 [2022-11-16 12:19:57,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:57,215 INFO L225 Difference]: With dead ends: 76294 [2022-11-16 12:19:57,215 INFO L226 Difference]: Without dead ends: 44448 [2022-11-16 12:19:57,228 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 [2022-11-16 12:19:57,229 INFO L413 NwaCegarLoop]: 1806 mSDtfsCounter, 829 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:57,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1950 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-16 12:19:57,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44448 states. [2022-11-16 12:19:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44448 to 43657. [2022-11-16 12:19:57,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43657 states, 43656 states have (on average 1.151663001649258) internal successors, (50277), 43656 states have internal predecessors, (50277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43657 states to 43657 states and 50277 transitions. [2022-11-16 12:19:57,736 INFO L78 Accepts]: Start accepts. Automaton has 43657 states and 50277 transitions. Word has length 326 [2022-11-16 12:19:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:57,737 INFO L495 AbstractCegarLoop]: Abstraction has 43657 states and 50277 transitions. [2022-11-16 12:19:57,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:57,737 INFO L276 IsEmpty]: Start isEmpty. Operand 43657 states and 50277 transitions. [2022-11-16 12:19:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-11-16 12:19:57,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:57,745 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:57,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:19:57,746 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:57,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2107588233, now seen corresponding path program 1 times [2022-11-16 12:19:57,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:57,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272718730] [2022-11-16 12:19:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:57,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 194 proven. 113 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 12:19:59,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:59,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272718730] [2022-11-16 12:19:59,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272718730] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:59,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767456705] [2022-11-16 12:19:59,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:59,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:59,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:59,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:59,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:19:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:59,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:19:59,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-16 12:19:59,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:19:59,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767456705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:59,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:19:59,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:19:59,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359553739] [2022-11-16 12:19:59,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:59,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:19:59,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:59,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:19:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:19:59,743 INFO L87 Difference]: Start difference. First operand 43657 states and 50277 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:04,271 INFO L93 Difference]: Finished difference Result 86516 states and 99752 transitions. [2022-11-16 12:20:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:20:04,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 341 [2022-11-16 12:20:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:04,315 INFO L225 Difference]: With dead ends: 86516 [2022-11-16 12:20:04,316 INFO L226 Difference]: Without dead ends: 43648 [2022-11-16 12:20:04,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:20:04,337 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1076 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:04,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 818 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 12:20:04,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43648 states. [2022-11-16 12:20:04,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43648 to 43647. [2022-11-16 12:20:04,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43647 states, 43646 states have (on average 1.1132749851074555) internal successors, (48590), 43646 states have internal predecessors, (48590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43647 states to 43647 states and 48590 transitions. [2022-11-16 12:20:04,833 INFO L78 Accepts]: Start accepts. Automaton has 43647 states and 48590 transitions. Word has length 341 [2022-11-16 12:20:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:04,834 INFO L495 AbstractCegarLoop]: Abstraction has 43647 states and 48590 transitions. [2022-11-16 12:20:04,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:04,834 INFO L276 IsEmpty]: Start isEmpty. Operand 43647 states and 48590 transitions. [2022-11-16 12:20:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-11-16 12:20:04,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:04,840 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-16 12:20:04,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:20:05,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:20:05,046 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:05,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:05,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1592896073, now seen corresponding path program 1 times [2022-11-16 12:20:05,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:05,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511274080] [2022-11-16 12:20:05,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:05,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-11-16 12:20:05,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:05,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511274080] [2022-11-16 12:20:05,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511274080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:20:05,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:20:05,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:20:05,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612704721] [2022-11-16 12:20:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:20:05,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:20:05,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:05,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:20:05,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:20:05,832 INFO L87 Difference]: Start difference. First operand 43647 states and 48590 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:10,178 INFO L93 Difference]: Finished difference Result 86503 states and 96385 transitions. [2022-11-16 12:20:10,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:20:10,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 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 360 [2022-11-16 12:20:10,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:10,221 INFO L225 Difference]: With dead ends: 86503 [2022-11-16 12:20:10,221 INFO L226 Difference]: Without dead ends: 43645 [2022-11-16 12:20:10,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:20:10,238 INFO L413 NwaCegarLoop]: 1342 mSDtfsCounter, 1167 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:10,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 1421 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 12:20:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43645 states. [2022-11-16 12:20:10,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43645 to 43644. [2022-11-16 12:20:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43644 states, 43643 states have (on average 1.086588914602571) internal successors, (47422), 43643 states have internal predecessors, (47422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:10,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43644 states to 43644 states and 47422 transitions. [2022-11-16 12:20:10,810 INFO L78 Accepts]: Start accepts. Automaton has 43644 states and 47422 transitions. Word has length 360 [2022-11-16 12:20:10,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:10,810 INFO L495 AbstractCegarLoop]: Abstraction has 43644 states and 47422 transitions. [2022-11-16 12:20:10,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:10,811 INFO L276 IsEmpty]: Start isEmpty. Operand 43644 states and 47422 transitions. [2022-11-16 12:20:10,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-11-16 12:20:10,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:10,818 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:20:10,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:20:10,818 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:10,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:10,819 INFO L85 PathProgramCache]: Analyzing trace with hash -489551286, now seen corresponding path program 1 times [2022-11-16 12:20:10,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:10,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750567309] [2022-11-16 12:20:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:10,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-16 12:20:11,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:11,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750567309] [2022-11-16 12:20:11,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750567309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:20:11,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:20:11,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:20:11,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866711414] [2022-11-16 12:20:11,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:20:11,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:20:11,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:11,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:20:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:20:11,125 INFO L87 Difference]: Start difference. First operand 43644 states and 47422 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:20,799 INFO L93 Difference]: Finished difference Result 150458 states and 163809 transitions. [2022-11-16 12:20:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:20:20,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2022-11-16 12:20:20,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:20,915 INFO L225 Difference]: With dead ends: 150458 [2022-11-16 12:20:20,915 INFO L226 Difference]: Without dead ends: 107603 [2022-11-16 12:20:20,941 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 [2022-11-16 12:20:20,941 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1704 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 6635 mSolverCounterSat, 1036 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 7671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 6635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:20,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 801 Invalid, 7671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 6635 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-16 12:20:21,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107603 states. [2022-11-16 12:20:22,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107603 to 104326. [2022-11-16 12:20:22,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104326 states, 104325 states have (on average 1.0794344596213754) internal successors, (112612), 104325 states have internal predecessors, (112612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104326 states to 104326 states and 112612 transitions. [2022-11-16 12:20:22,205 INFO L78 Accepts]: Start accepts. Automaton has 104326 states and 112612 transitions. Word has length 383 [2022-11-16 12:20:22,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:22,206 INFO L495 AbstractCegarLoop]: Abstraction has 104326 states and 112612 transitions. [2022-11-16 12:20:22,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 104326 states and 112612 transitions. [2022-11-16 12:20:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-11-16 12:20:22,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:22,214 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:20:22,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:20:22,214 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:22,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:22,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1060659488, now seen corresponding path program 1 times [2022-11-16 12:20:22,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:22,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993220178] [2022-11-16 12:20:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:22,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:24,483 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 363 proven. 113 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-16 12:20:24,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:24,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993220178] [2022-11-16 12:20:24,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993220178] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:20:24,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772441564] [2022-11-16 12:20:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:24,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:24,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:24,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:24,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:20:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:24,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:20:24,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-11-16 12:20:24,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:20:24,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772441564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:20:24,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:20:24,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:20:24,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898370174] [2022-11-16 12:20:24,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:20:24,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:20:24,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:20:24,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:20:24,821 INFO L87 Difference]: Start difference. First operand 104326 states and 112612 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:30,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:30,151 INFO L93 Difference]: Finished difference Result 233052 states and 253448 transitions. [2022-11-16 12:20:30,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:20:30,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 426 [2022-11-16 12:20:30,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:30,483 INFO L225 Difference]: With dead ends: 233052 [2022-11-16 12:20:30,483 INFO L226 Difference]: Without dead ends: 129515 [2022-11-16 12:20:30,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:20:30,513 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 954 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 3354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:30,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 880 Invalid, 3354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-16 12:20:30,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129515 states. [2022-11-16 12:20:31,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129515 to 127922. [2022-11-16 12:20:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127922 states, 127921 states have (on average 1.0841925876126672) internal successors, (138691), 127921 states have internal predecessors, (138691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127922 states to 127922 states and 138691 transitions. [2022-11-16 12:20:32,458 INFO L78 Accepts]: Start accepts. Automaton has 127922 states and 138691 transitions. Word has length 426 [2022-11-16 12:20:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:32,459 INFO L495 AbstractCegarLoop]: Abstraction has 127922 states and 138691 transitions. [2022-11-16 12:20:32,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:32,460 INFO L276 IsEmpty]: Start isEmpty. Operand 127922 states and 138691 transitions. [2022-11-16 12:20:32,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-11-16 12:20:32,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:32,480 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-16 12:20:32,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:20:32,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:32,686 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:32,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:32,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1560615882, now seen corresponding path program 1 times [2022-11-16 12:20:32,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:32,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803528280] [2022-11-16 12:20:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:32,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 460 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-16 12:20:33,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:33,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803528280] [2022-11-16 12:20:33,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803528280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:20:33,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:20:33,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:20:33,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723701175] [2022-11-16 12:20:33,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:20:33,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:20:33,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:20:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:20:33,695 INFO L87 Difference]: Start difference. First operand 127922 states and 138691 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:38,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:38,862 INFO L93 Difference]: Finished difference Result 256633 states and 278180 transitions. [2022-11-16 12:20:38,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:20:38,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 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 495 [2022-11-16 12:20:38,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:39,020 INFO L225 Difference]: With dead ends: 256633 [2022-11-16 12:20:39,021 INFO L226 Difference]: Without dead ends: 129500 [2022-11-16 12:20:39,071 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 [2022-11-16 12:20:39,072 INFO L413 NwaCegarLoop]: 1385 mSDtfsCounter, 835 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:39,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 1470 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-16 12:20:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129500 states. [2022-11-16 12:20:40,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129500 to 127911. [2022-11-16 12:20:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127911 states, 127910 states have (on average 1.0648971933390665) internal successors, (136211), 127910 states have internal predecessors, (136211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127911 states to 127911 states and 136211 transitions. [2022-11-16 12:20:40,926 INFO L78 Accepts]: Start accepts. Automaton has 127911 states and 136211 transitions. Word has length 495 [2022-11-16 12:20:40,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:40,927 INFO L495 AbstractCegarLoop]: Abstraction has 127911 states and 136211 transitions. [2022-11-16 12:20:40,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand 127911 states and 136211 transitions. [2022-11-16 12:20:40,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-11-16 12:20:40,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:40,940 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:20:40,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:20:40,940 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:40,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:40,941 INFO L85 PathProgramCache]: Analyzing trace with hash 759852934, now seen corresponding path program 1 times [2022-11-16 12:20:40,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:40,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929839166] [2022-11-16 12:20:40,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:40,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:43,305 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 303 proven. 113 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 12:20:43,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:43,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929839166] [2022-11-16 12:20:43,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929839166] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:20:43,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430198535] [2022-11-16 12:20:43,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:43,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:43,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:43,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:43,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:20:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:43,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:20:43,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-16 12:20:43,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:20:43,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430198535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:20:43,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:20:43,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:20:43,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142470581] [2022-11-16 12:20:43,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:20:43,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:20:43,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:43,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:20:43,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:20:43,914 INFO L87 Difference]: Start difference. First operand 127911 states and 136211 transitions. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:48,770 INFO L93 Difference]: Finished difference Result 252652 states and 269954 transitions. [2022-11-16 12:20:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:20:48,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 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 507 [2022-11-16 12:20:48,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:48,922 INFO L225 Difference]: With dead ends: 252652 [2022-11-16 12:20:48,922 INFO L226 Difference]: Without dead ends: 138915 [2022-11-16 12:20:48,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:20:48,958 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1092 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:48,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 390 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 12:20:49,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138915 states. [2022-11-16 12:20:50,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138915 to 138915. [2022-11-16 12:20:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138915 states, 138914 states have (on average 1.0621535626358753) internal successors, (147548), 138914 states have internal predecessors, (147548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138915 states to 138915 states and 147548 transitions. [2022-11-16 12:20:50,866 INFO L78 Accepts]: Start accepts. Automaton has 138915 states and 147548 transitions. Word has length 507 [2022-11-16 12:20:50,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:50,866 INFO L495 AbstractCegarLoop]: Abstraction has 138915 states and 147548 transitions. [2022-11-16 12:20:50,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 138915 states and 147548 transitions. [2022-11-16 12:20:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-11-16 12:20:50,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:50,884 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-11-16 12:20:50,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:20:51,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:51,085 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:51,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:51,085 INFO L85 PathProgramCache]: Analyzing trace with hash 733319304, now seen corresponding path program 1 times [2022-11-16 12:20:51,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:51,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910970336] [2022-11-16 12:20:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:51,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 472 proven. 113 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-16 12:20:53,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:53,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910970336] [2022-11-16 12:20:53,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910970336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:20:53,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580171100] [2022-11-16 12:20:53,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:53,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:53,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:53,339 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:53,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:20:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:53,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:20:53,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 454 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-16 12:20:53,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:20:53,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580171100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:20:53,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:20:53,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:20:53,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600449649] [2022-11-16 12:20:53,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:20:53,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:20:53,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:20:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:20:53,847 INFO L87 Difference]: Start difference. First operand 138915 states and 147548 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:58,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:58,769 INFO L93 Difference]: Finished difference Result 264440 states and 281354 transitions. [2022-11-16 12:20:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:20:58,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 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 533 [2022-11-16 12:20:58,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:58,948 INFO L225 Difference]: With dead ends: 264440 [2022-11-16 12:20:58,948 INFO L226 Difference]: Without dead ends: 139699 [2022-11-16 12:20:59,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:20:59,007 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 922 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:59,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 469 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-16 12:20:59,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139699 states. [2022-11-16 12:21:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139699 to 138117. [2022-11-16 12:21:00,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138117 states, 138116 states have (on average 1.0581829766283415) internal successors, (146152), 138116 states have internal predecessors, (146152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138117 states to 138117 states and 146152 transitions. [2022-11-16 12:21:01,366 INFO L78 Accepts]: Start accepts. Automaton has 138117 states and 146152 transitions. Word has length 533 [2022-11-16 12:21:01,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:21:01,366 INFO L495 AbstractCegarLoop]: Abstraction has 138117 states and 146152 transitions. [2022-11-16 12:21:01,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:01,367 INFO L276 IsEmpty]: Start isEmpty. Operand 138117 states and 146152 transitions. [2022-11-16 12:21:01,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2022-11-16 12:21:01,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:21:01,395 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 12:21:01,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:21:01,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:21:01,599 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:21:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:01,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1779447628, now seen corresponding path program 1 times [2022-11-16 12:21:01,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:01,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763222236] [2022-11-16 12:21:01,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:01,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:03,113 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 393 proven. 110 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 12:21:03,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:03,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763222236] [2022-11-16 12:21:03,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763222236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:21:03,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92701030] [2022-11-16 12:21:03,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:03,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:03,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:21:03,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:21:03,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:21:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:03,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:21:03,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:21:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2022-11-16 12:21:03,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:21:03,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92701030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:21:03,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:21:03,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-16 12:21:03,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492848463] [2022-11-16 12:21:03,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:21:03,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:21:03,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:03,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:21:03,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:21:03,459 INFO L87 Difference]: Start difference. First operand 138117 states and 146152 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:09,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:21:09,133 INFO L93 Difference]: Finished difference Result 300623 states and 318635 transitions. [2022-11-16 12:21:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:21:09,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 596 [2022-11-16 12:21:09,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:21:09,409 INFO L225 Difference]: With dead ends: 300623 [2022-11-16 12:21:09,409 INFO L226 Difference]: Without dead ends: 176680 [2022-11-16 12:21:09,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:21:09,491 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 979 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 2609 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 2609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:21:09,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 527 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 2609 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-16 12:21:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176680 states. [2022-11-16 12:21:11,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176680 to 124722. [2022-11-16 12:21:11,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124722 states, 124721 states have (on average 1.0543372808107696) internal successors, (131498), 124721 states have internal predecessors, (131498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124722 states to 124722 states and 131498 transitions. [2022-11-16 12:21:11,637 INFO L78 Accepts]: Start accepts. Automaton has 124722 states and 131498 transitions. Word has length 596 [2022-11-16 12:21:11,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:21:11,638 INFO L495 AbstractCegarLoop]: Abstraction has 124722 states and 131498 transitions. [2022-11-16 12:21:11,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:11,638 INFO L276 IsEmpty]: Start isEmpty. Operand 124722 states and 131498 transitions. [2022-11-16 12:21:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2022-11-16 12:21:11,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:21:11,740 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:21:11,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 12:21:11,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:21:11,946 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:21:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:11,947 INFO L85 PathProgramCache]: Analyzing trace with hash 184363191, now seen corresponding path program 1 times [2022-11-16 12:21:11,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:11,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260664699] [2022-11-16 12:21:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:11,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 303 proven. 113 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 12:21:15,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:21:15,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260664699] [2022-11-16 12:21:15,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260664699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:21:15,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430933173] [2022-11-16 12:21:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:15,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:21:15,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:21:15,599 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:21:15,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:21:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:21:16,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:21:16,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:21:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-16 12:21:16,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:21:16,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430933173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:21:16,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:21:16,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-16 12:21:16,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296567218] [2022-11-16 12:21:16,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:21:16,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:21:16,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:21:16,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:21:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:21:16,912 INFO L87 Difference]: Start difference. First operand 124722 states and 131498 transitions. Second operand has 3 states, 3 states have (on average 288.0) internal successors, (864), 2 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:21:21,668 INFO L93 Difference]: Finished difference Result 240005 states and 253406 transitions. [2022-11-16 12:21:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:21:21,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 288.0) internal successors, (864), 2 states have internal predecessors, (864), 0 states have call successors, (0), 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 1008 [2022-11-16 12:21:21,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:21:21,798 INFO L225 Difference]: With dead ends: 240005 [2022-11-16 12:21:21,799 INFO L226 Difference]: Without dead ends: 127880 [2022-11-16 12:21:21,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 1007 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:21:21,830 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:21:21,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1120 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 12:21:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127880 states. [2022-11-16 12:21:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127880 to 127871. [2022-11-16 12:21:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127871 states, 127870 states have (on average 1.0492687886134355) internal successors, (134170), 127870 states have internal predecessors, (134170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127871 states to 127871 states and 134170 transitions. [2022-11-16 12:21:23,373 INFO L78 Accepts]: Start accepts. Automaton has 127871 states and 134170 transitions. Word has length 1008 [2022-11-16 12:21:23,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:21:23,374 INFO L495 AbstractCegarLoop]: Abstraction has 127871 states and 134170 transitions. [2022-11-16 12:21:23,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 288.0) internal successors, (864), 2 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:21:23,374 INFO L276 IsEmpty]: Start isEmpty. Operand 127871 states and 134170 transitions. [2022-11-16 12:21:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2022-11-16 12:21:23,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:21:23,428 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:21:23,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:21:23,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7543d9bc-0545-4638-8b39-21c08dd39429/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:21:23,631 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:21:23,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:21:23,631 INFO L85 PathProgramCache]: Analyzing trace with hash -365313823, now seen corresponding path program 1 times [2022-11-16 12:21:23,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:21:23,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935908367] [2022-11-16 12:21:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:21:23,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:21:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat